{"id":125450,"date":"2022-10-24T18:20:39","date_gmt":"2022-10-25T01:20:39","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=125450"},"modified":"2022-10-24T18:20:39","modified_gmt":"2022-10-25T01:20:39","slug":"cname-cloaking","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/cname-cloaking\/","title":{"rendered":"CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0: DNS\u3092\u4f7f\u3063\u305f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3Cookie\u306e\u96a0\u853d"},"content":{"rendered":"<h2><strong>\u6982\u8981<\/strong><\/h2>\n<p>\u7686\u3055\u3093\u306fWeb\u30b5\u30a4\u30c8\u3092\u898b\u3066\u3044\u308b\u3068\u304d\u306b\u3001\u81ea\u5206\u304c\u898b\u3089\u308c\u3066\u3044\u308b\u3088\u3046\u306a\u6c17\u304c\u3059\u308b\u3053\u3068\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002\u3060\u3068\u3057\u305f\u3089\u8ab0\u304c\u3001\u305d\u306eWeb\u30b5\u30a4\u30c8\u3001\u3055\u3089\u306b\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5168\u822c\u3092\u901a\u3058\u3001\u79c1\u305f\u3061\u306e\u632f\u308b\u821e\u3044\u3092\u89b3\u5bdf\u3057\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u305d\u3046\u3057\u305f\u60c5\u5831\u306e\u6d41\u308c\u3092\u5236\u9650\u3057\u305f\u308a\u3001\u305b\u3081\u3066\u305d\u306e\u6d41\u308c\u3092\u628a\u63e1\u3057\u3066\u304a\u304f\u3053\u3068\u306f\u53ef\u80fd\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306f\u307b\u307c\u5e83\u544a\u3092\u4e2d\u5fc3\u306b\u56de\u3063\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u4eba\u3073\u3068\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u6d3b\u52d5\u306e\u76e3\u8996\u304b\u3089\u5229\u76ca\u3092\u5f97\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u306f\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u304c\u975e\u5e38\u306b\u8cb4\u91cd\u306a\u30ea\u30bd\u30fc\u30b9\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u3046\u3057\u3066\u96c6\u3081\u3089\u308c\u305f\u60c5\u5831\u304c(\u672c\u5f53\u306b\u5fc5\u8981\u3060\u3063\u305f\u3082\u306e\u3068\u307e\u3067\u306f\u3044\u304b\u306a\u3044\u306b\u305b\u3088)\u3088\u308a\u3088\u3044\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u306b\u3064\u306a\u304c\u308b\u3053\u3068\u306f\u591a\u3044\u3067\u3057\u3087\u3046\u3002\u305f\u3060\u3057\u3001\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u884c\u70ba\u306b\u3088\u308b\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fb5\u5bb3\u3078\u306e\u61f8\u5ff5\u3082\u8d77\u304d\u308b\u3079\u304f\u3057\u3066\u8d77\u304d\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u3046\u3057\u305f\u61f8\u5ff5\u3092\u53d7\u3051\u3001\u591a\u6570\u306e\u30b0\u30eb\u30fc\u30d7\u304c\u30c4\u30fc\u30eb\u306e\u958b\u767a\u3084\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6539\u4fee\u3067\u30e6\u30fc\u30b6\u30fc\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u4fdd\u8b77\u3057\u3088\u3046\u3068\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u305d\u3046\u3057\u305f\u5bfe\u5fdc\u306e\u3072\u3068\u3064\u304c\u3001\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\u3067\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3Cookie\u306e\u30d6\u30ed\u30c3\u30af\u3067\u3059\u3002\u3053\u306e\u5bfe\u5fdc\u306b\u3088\u308a\u3001\u5206\u6790\u3084\u5e83\u544a\u3001\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u3092\u751f\u696d\u3068\u3059\u308b\u4f01\u696d\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u53ce\u96c6\u6226\u7565\u306e\u7df4\u308a\u306a\u304a\u3057\u306b\u305b\u307e\u3089\u308c\u307e\u3057\u305f\u3002\u305d\u3046\u3057\u305f\u6226\u7565\u306e\u3072\u3068\u3064\u304c\u672c\u7a3f\u3067\u7d39\u4ecb\u3059\u308b\u300cCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u300d\u3067\u3059\u3002<\/p>\n<p>CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u60c5\u5831\u3092\u9001\u4fe1\u3059\u308b\u3055\u3044\u3001\u305d\u306e\u60c5\u5831\u3092Web\u30b5\u30a4\u30c8\u306e\u6240\u6709\u8005\u304c\u7ba1\u7406\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u306b\u3068\u3081\u304a\u304b\u305a\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3(\u5e83\u544a\u4e3b\u306a\u3069)\u304c\u7ba1\u7406\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u306b\u3082\u9001\u4fe1\u3059\u308b\u3053\u3068\u3092\u3001\u30c9\u30e1\u30a4\u30f3\u30cd\u30fc\u30e0\u30b7\u30b9\u30c6\u30e0(DNS)\u3092\u4f7f\u3063\u3066\u96a0\u853d\u3059\u308b\u624b\u6cd5\u3067\u3059\u3002CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306f\u3001\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fdd\u8b77\u306b\u4f7f\u3063\u3066\u3044\u308b\u3057\u304f\u307f\u3092\u640d\u306a\u3063\u305f\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u640d\u306a\u3046\u3055\u3089\u306b\u5225\u306e\u6163\u884c\u306b\u3064\u306a\u304c\u3063\u305f\u308a\u3001\u305d\u3046\u3057\u305f\u6163\u884c\u3068\u4e00\u7dd2\u306b\u4f7f\u308f\u308c\u3066\u3057\u307e\u3046\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306f\u3001CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u3092\u691c\u51fa\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u3092\u958b\u767a\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u691c\u51fa\u5668\u304c\u751f\u6210\u3057\u305f\u77e5\u898b\u306f<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u88fd\u54c1<\/a>\u3092\u3054\u5229\u7528\u306e\u304a\u5ba2\u69d8\u3067<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/dns-security\">DNS \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/a>\u3084<a href=\"https:\/\/docs.paloaltonetworks.com\/pan-os\/10-1\/pan-os-new-features\/url-filtering-features\/advanced-url-filtering.html\">\u9ad8\u5ea6\u306aURL\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/a>\u306a\u3069\u306e<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/security-subscriptions\">\u30af\u30e9\u30a6\u30c9\u914d\u4fe1\u578b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30fc\u30d3\u30b9<\/a>\u3092\u304a\u6301\u3061\u306e\u65b9\u306b\u3054\u5229\u7528\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n<table style=\"width: 92.8872%;\">\n<tbody>\n<tr>\n<td style=\"width: 78.4689%;\"><span style=\"font-weight: 400;\">\u95a2\u9023\u3059\u308bUnit 42\u306e\u30c8\u30d4\u30c3\u30af<\/span><\/td>\n<td style=\"width: 542.105%;\"><a href=\"https:\/\/unit42.paloaltonetworks.jp\/tag\/dns-ja\/\"><span style=\"font-weight: 400;\">DNS<\/span><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u76ee\u6b21<\/h2>\n<p><a href=\"#tracking-leads-cookies\">\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u304cCookie\u306b\u3064\u306a\u304c\u308b\u7406\u7531<\/a><br \/>\n<a href=\"#cookie-blocking\">Cookie\u30d6\u30ed\u30c3\u30af\u306e\u3057\u304f\u307f<\/a><br \/>\n<a href=\"#cname-cloaking-definition\">CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3068\u306f\u4f55\u304b<\/a><br \/>\n<a href=\"#defenses\">\u9632\u5fa1<\/a><br \/>\n<a href=\"#cname-cloaking-detections-in-action\">\u5b9f\u969b\u306eCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u691c\u51fa\u4e8b\u4f8b<\/a><br \/>\n<a href=\"#cloaking-third-party-cookies\">\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3Cookie\u306e\u30af\u30ed\u30fc\u30ad\u30f3\u30b0<\/a><br \/>\n<a href=\"#evading-defenses-cookie-syncing\">Cookie\u540c\u671f\u306b\u3088\u308b\u9632\u5fa1\u306e\u56de\u907f<\/a><br \/>\n<a href=\"#cookie-leaks\">Cookie\u306e\u6d41\u51fa<\/a><br \/>\n<a href=\"#conclusion\">\u7d50\u8ad6<\/a><br \/>\n<a href=\"#additional-resources\">\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/a><\/p>\n<h2><a id=\"tracking-leads-cookies\"><\/a><strong>\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u304cCookie\u306b\u3064\u306a\u304c\u308b\u7406\u7531 <\/strong><\/h2>\n<p>Web\u3067\u5229\u7528\u3067\u304d\u308b\u30b3\u30f3\u30c6\u30f3\u30c4\u3084\u30b5\u30fc\u30d3\u30b9\u306e\u591a\u304f\u306f\u5e83\u544a\u53ce\u5165\u3067\u6210\u308a\u7acb\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u3057\u3066\u5e83\u544a\u306f\u6b74\u53f2\u7684\u306b\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u306b\u4f9d\u5b58\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u3053\u306e\u95a2\u4fc2\u306f\u5e83\u544a\u4e3b\u304c\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u6d3b\u52d5\u306e\u52b9\u7387\u3092\u6700\u5927\u5316\u3057\u305f\u304c\u308b\u3053\u3068\u306b\u8d77\u56e0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5e83\u544a\u4e3b\u306b\u3088\u308b\u52b9\u7387\u6700\u5927\u5316\u306e\u65b9\u6cd5\u306e\u3072\u3068\u3064\u304c\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u8868\u793a\u3059\u308b\u5e83\u544a\u3092\u8cfc\u5165\u3057\u3066\u3082\u3089\u3048\u305d\u3046\u306a\u5546\u54c1\u3084\u30b5\u30fc\u30d3\u30b9\u306b\u3057\u307c\u308b\u65b9\u6cd5\u3067\u3059\u3002\u3067\u306f\u5e83\u544a\u4e3b\u306f\u3069\u306e\u5e83\u544a\u3092\u51fa\u3059\u306e\u304c\u3088\u3044\u304b\u3092\u3069\u3046\u5224\u65ad\u3057\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u308c\u306b\u306f(\u305d\u308c\u3053\u305d\u30af\u30c3\u30ad\u30fc\u3092\u4f5c\u308b\u3068\u304d\u306e\u3088\u3046\u306a)\u578b\u306b\u306f\u307e\u3063\u305f\u65b9\u6cd5\u3068\u3044\u3046\u3082\u306e\u304c\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u73fe\u5728\u306f\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u304c\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u6587\u8108\u3067\u3044\u3046\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u3068\u306f\u3001Web\u30b5\u30a4\u30c8\u5185\u307e\u305f\u306f\u8907\u6570\u306eWeb\u30b5\u30a4\u30c8\u306b\u308f\u305f\u308b\u4eba\u3073\u3068\u306e\u6d3b\u52d5\u3092\u76e3\u8996\u3059\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u306f\u3055\u307e\u3056\u307e\u306a\u5f79\u5272\u3067\u6709\u7528\u3067\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070Web\u30b5\u30a4\u30c8\u306e\u6240\u6709\u8005\u306f\u3001\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u30c7\u30fc\u30bf\u3092\u4f7f\u3063\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u3092\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30ba\u3057\u305f\u308a\u3001\u30b7\u30e7\u30c3\u30d4\u30f3\u30b0\u30ab\u30fc\u30c8\u306e\u72b6\u614b\u3092\u4fdd\u6301\u3057\u305f\u308a\u3001\u5e83\u544a\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306e\u52b9\u679c\u3092\u6e2c\u5b9a\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u9867\u5ba2\u306b\u3068\u3063\u3066\u3082\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u3001\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u3092\u5408\u7406\u7684\u306a\u7bc4\u56f2\u306b\u3068\u3069\u3081\u3066\u3044\u308c\u3070\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u95a2\u9023\u306e\u554f\u984c\u3082\u5236\u9650\u3055\u308c\u307e\u3059\u3002\u3068\u3053\u308d\u304c\u5b9f\u969b\u306e\u904b\u7528\u3067\u306f\u3001\u60c5\u5831\u5171\u6709\u7bc4\u56f2\u304c\u7279\u5b9aWeb\u30b5\u30a4\u30c8\u3084\u4f01\u696d\u3092\u3053\u3048\u3066\u5e83\u304c\u308b\u3053\u3068\u304c\u591a\u3044\u306e\u3067\u3059\u3002<\/p>\n<p>Web\u30b5\u30a4\u30c8\u6240\u6709\u8005\u3082\u5e83\u544a\u4e3b\u3082\u3001\u5206\u6790\u3084\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u3092\u5c02\u9580\u3068\u3059\u308b\u4f01\u696d\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3057\u3066\u304a\u308a\u3001\u305d\u306e\u4e2d\u306b\u306f\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u306e\u53d7\u3051\u6e21\u3057\u304c\u542b\u307e\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3046\u3057\u305f\u30c7\u30fc\u30bf\u306b\u306f\u500b\u4eba\u60c5\u5831\u304c\u542b\u307e\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3057\u3001\u305f\u3068\u3048\u500b\u4eba\u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u306a\u304f\u3066\u3082\u3001\u3055\u307e\u3056\u307e\u306a\u95a2\u4fc2\u8005\u304c\u30e6\u30fc\u30b6\u30fc\u306e\u95a2\u77e5\u3082\u540c\u610f\u3082\u306a\u304f\u8907\u6570\u306e\u30b5\u30a4\u30c8\u3084\u30c7\u30d0\u30a4\u30b9\u3067\u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u3092\u53ce\u96c6\u3057\u3046\u308b\u3053\u3068\u304b\u3089\u3001<a href=\"https:\/\/www.pewresearch.org\/internet\/2019\/11\/15\/americans-and-privacy-concerned-confused-and-feeling-lack-of-control-over-their-personal-information\/\">\u591a\u304f\u306e\u4eba\u3073\u3068\u304c\u61f8\u5ff5\u3092\u62b1\u3044\u3066<\/a>\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u3046\u3057\u305f\u61f8\u5ff5\u3092\u53d7\u3051\u3001\u4e3b\u8981\u306a\u30d6\u30e9\u30a6\u30b6\u958b\u767a\u8005\u306f\u3001\u7279\u5b9a\u306e\u7a2e\u985e\u306e\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u304b\u3089\u4eba\u3073\u3068\u3092\u4fdd\u8b77\u3059\u308b\u6a5f\u80fd\u3092\u5c0e\u5165\u3057\u306f\u3058\u3081\u307e\u3057\u305f\u3002\u305d\u3046\u3057\u3066\u884c\u308f\u308c\u305f\u5927\u304d\u306a\u5909\u66f4\u306e\u3072\u3068\u3064\u304c\u3001\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u308bCookie\u306e\u6271\u3044\u304b\u305f\u306e\u5909\u66f4\u3067\u3059\u3002\u305f\u3068\u3048\u3070<a href=\"https:\/\/blog.mozilla.org\/en\/products\/firefox\/todays-firefox-blocks-third-party-tracking-cookies-and-cryptomining-by-default\/\">\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u3092\u30d6\u30ed\u30c3\u30af<\/a>\u3057\u305f\u308a\u3001Cookie\u3078\u306e\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\u306b<a href=\"https:\/\/blog.chromium.org\/2020\/01\/building-more-private-web-path-towards.html\">\u5236\u9650\u3092\u8a2d\u3051<\/a>\u305f\u308a\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2><a id=\"cookie-blocking\"><\/a>Cookie\u30d6\u30ed\u30c3\u30af\u306e\u3057\u304f\u307f<\/h2>\n<p>Cookie\u3068\u306f\u8981\u3059\u308b\u306bWeb\u30b5\u30a4\u30c8\u304c\u30e6\u30fc\u30b6\u30fc\u306b\u4e0e\u3048\u308b\u30c8\u30fc\u30af\u30f3\u306e\u3053\u3068\u3067\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306e\u30d6\u30e9\u30a6\u30b6\u306fWeb\u30b5\u30a4\u30c8\u3068\u901a\u4fe1\u3059\u308b\u3055\u3044\u3001\u3053\u306e\u30c8\u30fc\u30af\u30f3\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u671f\u5f85\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Cookie\u306f\u30ea\u30af\u30a8\u30b9\u30c8\u3068\u30e6\u30fc\u30b6\u30fc\u3092\u7d50\u3073\u3064\u3051\u308b\u3068\u3044\u3046\u610f\u5473\u3067\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u3092\u3057\u3084\u3059\u304f\u3057\u3066\u304f\u308c\u307e\u3059\u3057\u3001Web\u30b5\u30a4\u30c8\u306e\u6240\u6709\u8005\u306b\u30e6\u30fc\u30b6\u30fc\u306e\u884c\u52d5\u306b\u3064\u3044\u3066\u6559\u3048\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<p>\u300c\u30d5\u30a1\u30fc\u30b9\u30c8\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u300d\u3068\u306f\u3001\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u304c\u3042\u308bWeb\u30b5\u30a4\u30c8\u3092\u95b2\u89a7\u3057\u3066\u3044\u308b\u3068\u304d\u3001\u305d\u306eWeb\u30b5\u30a4\u30c8\u3092\u30db\u30b9\u30c8\u3057\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u306e\u6240\u6709\u8005\u304c\u751f\u6210\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u300c\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u300d\u3068\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u305d\u306e\u3068\u304d\u95b2\u89a7\u3057\u3066\u3044\u306a\u3044\u30c9\u30e1\u30a4\u30f3\u306b\u3088\u308bCookie\u3067\u3001\u901a\u5e38\u306f\u5e83\u544a\u306e\u305f\u3081\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3068\u3057\u3066\u3001\u3042\u308b\u30e6\u30fc\u30b6\u30fc(\u30a2\u30ea\u30b9)\u304c<span style=\"font-family: 'courier new', courier, monospace;\">www[.]example[.]com<\/span>\u3092\u95b2\u89a7\u3057\u3066\u3044\u308b\u3068\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u30c9\u30e1\u30a4\u30f3<span style=\"font-family: 'courier new', courier, monospace;\">example[.]com<\/span>\u3092\u6240\u6709\u3057\u3066\u3044\u308b\u306e\u306f\u30dc\u30d6\u3067\u3001\u30dc\u30d6\u306f\u5f53\u8a72\u30c9\u30e1\u30a4\u30f3\u3067\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308bWeb\u30b5\u30a4\u30c8\u3092\u30e6\u30fc\u30b6\u30fc\u304c\u8a2a\u554f\u3057\u305f\u3055\u3044\u3001\u305d\u306e\u30e6\u30fc\u30b6\u30fc\u306bCookie\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u3001\u81ea\u5206\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u3082\u306e\u3068\u3057\u307e\u3059\u3002\u30a2\u30ea\u30b9\u304c<span style=\"font-family: 'courier new', courier, monospace;\">example[.]com<\/span>\u306e\u307b\u304b\u306e\u30da\u30fc\u30b8(\u305f\u3068\u3048\u3070<span style=\"font-family: 'courier new', courier, monospace;\">chocolate_chip.example[.]com<\/span>\u3084<span style=\"font-family: 'courier new', courier, monospace;\">www[.example[.]com\/gersnap<\/span>)\u3092\u95b2\u89a7\u3057\u305f\u5834\u5408\u3001\u30a2\u30ea\u30b9\u306e\u9001\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u306f\u3053\u306eCookie\u304c\u542b\u307e\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u56f31\u306f\u3053\u306e\u6d41\u308c\u3092\u56f3\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p><figure id=\"attachment_125426\" aria-describedby=\"caption-attachment-125426\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-125427 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/10\/word-image-28-ja.png\" alt=\"\u3053\u306e\u56f3\u306e\u30e6\u30fc\u30b6\u30fc\u306fwww[.]example[.]com\u3092\u95b2\u89a7\u3057\u3066\u3044\u308b\u3002HTTP\u306eGET\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u30b5\u30a4\u30c8\u306eWeb\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u3002\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u306f\u5fdc\u7b54\u3068\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u306bCookie\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u300cmy_cookies\u300d\u3068\u3044\u3046Cookie\u306e\u5024\u304c\u300cpeanut_butter\u300d\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3002\u3053\u306e\u4f8b\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u4ed6\u306e\u30da\u30fc\u30b8\u3092\u95b2\u89a7\u3059\u308b\u3068\u3001\u3053\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u9001\u4fe1\u3059\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u306f\u300cpeanut_butter\u300d\u3068\u3044\u3046Cookie\u304c\u542b\u307e\u308c\u3001\u30b5\u30a4\u30c8\u4e0a\u3067\u306e\u884c\u52d5\u3092\u8ffd\u8de1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3002\" width=\"900\" height=\"555\" \/><figcaption id=\"caption-attachment-125426\" class=\"wp-caption-text\">\u56f31. my_cookie\u3068\u3044\u3046Cookie\u304cwww[.]example[.]com\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u7d4c\u7531\u3067\u8a2d\u5b9a\u3055\u308c\u308b<\/figcaption><\/figure>Cookie\u306e\u5c5e\u6027\u3068\u30a2\u30ea\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u306e\u8a2d\u5b9a\u306b\u3088\u308a\u307e\u3059\u304c\u3001\u30a2\u30ea\u30b9\u306e<span style=\"font-family: 'courier new', courier, monospace;\">example[.]com<\/span>\u3078\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u304cCookie\u3092\u542b\u3080\u306e\u306f\u3001\u30a2\u30ea\u30b9\u304c\u65e2\u306b<span style=\"font-family: 'courier new', courier, monospace;\">example[.]com<\/span>\u3092\u95b2\u89a7\u3057\u3066\u3044\u305f\u5834\u5408\u306b\u9650\u3089\u308c\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30a2\u30ea\u30b9\u304c\u3059\u3067\u306b<span style=\"font-family: 'courier new', courier, monospace;\">www[.]example[.]com<\/span>\u3092\u95b2\u89a7\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u30a2\u30ea\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u6b21\u306b<span style=\"font-family: 'courier new', courier, monospace;\">example[.]com\/oatmeal.png<\/span>\u3078\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u884c\u3046\u306e\u3067\u3042\u308c\u3070Cookie\u3092\u542b\u3081\u307e\u3059\u304c\u3001<span style=\"font-family: 'courier new', courier, monospace;\">www[.]example[.]net<\/span>\u3078\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u884c\u3046\u306e\u3067\u3042\u308c\u3070Cookie\u3092\u542b\u3081\u307e\u305b\u3093\u3002\u3053\u306e\u5236\u9650\u306e\u304a\u304b\u3052\u3067\u30a2\u30ea\u30b9\u306e\u307b\u304b\u306e\u8a2a\u554f\u5148\u30b5\u30a4\u30c8\u3092\u30dc\u30d6\u306f\u898b\u3089\u308c\u305a\u3001\u30a2\u30ea\u30b9\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fdd\u8b77\u306b\u4e00\u5f79\u8cb7\u3063\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<p>\u30a2\u30ea\u30b9\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u5b88\u308b\u3082\u3046\u3072\u3068\u3064\u306e\u65b9\u6cd5\u3068\u3057\u3066\u3001\u30a2\u30ea\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u306f\u3001\u30a2\u30ea\u30b9\u304c<span style=\"font-family: 'courier new', courier, monospace;\">example[.]net<\/span>\u3092\u95b2\u89a7\u4e2d\u3001<span style=\"font-family: 'courier new', courier, monospace;\">example[.]net<\/span>\u4ee5\u5916\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u8a2d\u5b9a\u3057\u3088\u3046\u3068\u3059\u308bCookie\u3092\u30d6\u30ed\u30c3\u30af\u3067\u304d\u307e\u3059\u3002\u4f8b\u3092\u3042\u3052\u3066\u8aac\u660e\u3057\u307e\u3057\u3087\u3046\u3002\u305f\u3068\u3048\u3070\u3001<span style=\"font-family: 'courier new', courier, monospace;\">ads[.]example[.]com<\/span>\u304b\u3089\u306e\u5e83\u544a\u304c\u3001<span style=\"font-family: 'courier new', courier, monospace;\">www[.]example[.]net<\/span>\u306b\u8868\u793a\u3055\u308c\u305f\u3068\u3057\u307e\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\">ads[.]example[.]com<\/span>\u306e\u6240\u6709\u8005\u306f\u3001\u5e83\u544a\u3092\u63d0\u4f9b\u3059\u308b\u3055\u3044\u3001\u30a2\u30ea\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u306bCookie\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u306b\u3042\u305f\u308a\u307e\u3059(\u56f32\u53c2\u7167)\u3002\u3053\u3053\u3067\u3001\u30a2\u30ea\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3Cookie\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u3053\u306eCookie\u306f\u305d\u306e\u5f8c\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u6642\u306b<span style=\"font-family: 'courier new', courier, monospace;\">example[.]com<\/span>\u306b\u306f\u8fd4\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<figure id=\"attachment_125428\" aria-describedby=\"caption-attachment-125428\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-125429 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/10\/word-image-29-ja.png\" alt=\"\u3053\u306e\u56f3\u306e\u30e6\u30fc\u30b6\u30fc\u306fwww[.]example[.]com\u3092\u95b2\u89a7\u3057\u3066\u3044\u308b\u3002HTTP\u306eGET\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u30b5\u30a4\u30c8\u306eWeb\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u3002\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u306f\u5fdc\u7b54\u3068\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u306bCookie\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u300cmy_cookies\u300d\u3068\u3044\u3046Cookie\u306e\u5024\u304c\u300cpeanut_butter\u300d\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3002\u3053\u306e\u4f8b\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u4ed6\u306e\u30da\u30fc\u30b8\u3092\u95b2\u89a7\u3059\u308b\u3068\u3001\u3053\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u9001\u4fe1\u3059\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u306f\u300cpeanut_butter\u300d\u3068\u3044\u3046Cookie\u304c\u542b\u307e\u308c\u3001\u30b5\u30a4\u30c8\u4e0a\u3067\u306e\u884c\u52d5\u3092\u8ffd\u8de1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3002\" width=\"900\" height=\"479\" \/><figcaption id=\"caption-attachment-125428\" class=\"wp-caption-text\">\u56f32. example[.]com\u304b\u3089\u306eCookie\u306f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u306a\u306e\u3067\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b<\/figcaption><\/figure>\n<h2><a id=\"cname-cloaking-definition\"><\/a><strong>CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3068\u306f\u4f55\u304b<\/strong><\/h2>\n<p>\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u6392\u9664\u306e\u898b\u901a\u3057\u3092\u53d7\u3051\u3066\u5e83\u544a\u4e3b\u3084Web\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5206\u6790\u4e8b\u696d\u8005\u306e\u9593\u306b\u61f8\u5ff5\u304c\u5e83\u304c\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u4e8b\u696d\u8005\u306f\u307b\u304b\u306eWeb\u30b5\u30a4\u30c8\u306b\u81ea\u793e\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u57cb\u3081\u8fbc\u3093\u3067\u3044\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u305d\u308c\u3089Web\u30b5\u30a4\u30c8\u304b\u3089\u9001\u4fe1\u3055\u308c\u308bCookie\u306b\u305f\u3088\u3063\u3066\u95b2\u89a7\u8005\u60c5\u5831\u3092\u53ce\u96c6\u3057\u3001\u305d\u306e\u60c5\u5831\u306b\u3088\u3063\u3066\u5e83\u544a\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3092\u8abf\u6574\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u3053\u3067\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3Cookie\u304c\u5ec3\u6b62\u3055\u308c\u3066\u3057\u307e\u3046\u3068\u3001\u4e8b\u696d\u8005\u304c\u5e83\u544a\u30bf\u30fc\u30b2\u30c3\u30c8\u3084\u5206\u6790\u3092\u3059\u308b\u306e\u306b\u4f7f\u3048\u308b\u60c5\u5831\u304c\u6e1b\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u305d\u3053\u3067\u3053\u306e\u5236\u7d04\u306b\u5bfe\u6297\u3059\u308b\u3079\u304f\u300c\u30ab\u30ce\u30cb\u30ab\u30eb\u30cd\u30fc\u30e0(Canonical NAME: CNAME)\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u300d\u3068\u547c\u3070\u308c\u308b\u624b\u6cd5\u306b\u3046\u3063\u305f\u3048\u308b\u4e8b\u696d\u8005\u304c\u51fa\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>CNAME\u30ec\u30b3\u30fc\u30c9\u3068\u306f\u3001DNS\u306e\u30ea\u30bd\u30fc\u30b9\u30ec\u30b3\u30fc\u30c9(Resource Record: RR)\u306e\u4e00\u7a2e\u3067\u3001\u4ee3\u66ff\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u305d\u306e\u771f\u306e\u540d\u524d\u306b\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u3082\u306e\u3067\u3059\u3002CNAME\u30ec\u30b3\u30fc\u30c9\u3092\u4f7f\u3046\u3068\u3001\u8907\u6570\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u304b\u3089\u3072\u3068\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u30e6\u30fc\u30b6\u30fc\u3092\u8a98\u5c0e\u3067\u304d\u308b\u306e\u3067\u4fbf\u5229\u3067\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u3042\u308bDNS\u30ea\u30be\u30eb\u30d0\u304c\u3001\u3042\u308b\u30c9\u30e1\u30a4\u30f3\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u30af\u30a8\u30ea\u3092\u9001\u4fe1\u3057\u3001\u305d\u308c\u306b\u5bfe\u3057\u3066CNAME\u30ec\u30b3\u30fc\u30c9\u304c\u8fd4\u3055\u308c\u305f\u3068\u3057\u307e\u3057\u3087\u3046\u3002\u305d\u306e\u5834\u5408\u3001\u305d\u306e\u30ea\u30be\u30eb\u30d0\u306f\u3075\u3064\u3046\u3001\u3055\u3089\u306b\u305d\u306eCNAME\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u30af\u30a8\u30ea\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u3046\u3057\u3066IP\u30a2\u30c9\u30ec\u30b9\u3092\u5f97\u305f\u30ea\u30be\u30eb\u30d0\u306f\u3001\u305d\u306e\u30af\u30a8\u30ea\u3092\u958b\u59cb\u3057\u305f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u305d\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>\u30d6\u30e9\u30a6\u30b6\u304cWeb\u30b5\u30a4\u30c8\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306b\u5bfe\u3059\u308bDNS\u30af\u30a8\u30ea\u3092\u958b\u59cb\u3059\u308b\u3055\u3044\u3001\u30d6\u30e9\u30a6\u30b6\u304b\u3089\u306f\u3053\u308c\u3089\u30af\u30a8\u30ea\u306e\u5185\u5bb9\u304c\u898b\u3048\u306a\u3044\u3053\u3068\u304c\u591a\u3044\u306e\u3067\u3001\u5bfe\u8c61\u30c9\u30e1\u30a4\u30f3\u306bCNAME\u30ec\u30b3\u30fc\u30c9\u304c\u3042\u308b\u3053\u3068\u3082\u77e5\u308a\u3048\u307e\u305b\u3093\u3002\u30d6\u30e9\u30a6\u30b6\u306b\u898b\u3048\u308b\u306e\u306f\u5143\u306e\u540d\u524d\u3001\u3064\u307e\u308a\u305d\u306e\u5143\u306e\u540d\u524d\u304c\u6700\u7d42\u7684\u306b\u89e3\u6c7a\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u3067\u3059\u3002<\/p>\n<p>\u56f33\u306fCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306e\u3057\u304f\u307f\u306e\u5927\u307e\u304b\u306a\u6d41\u308c\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002Web\u30b5\u30a4\u30c8\u6240\u6709\u8005\u306e\u30dc\u30d6\u306f\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u304c\u63d0\u4f9b\u3059\u308b\u30b3\u30f3\u30c6\u30f3\u30c4\u3092<span style=\"font-family: 'courier new', courier, monospace;\">www[.]example[.]com<\/span>\u306eWeb\u30b5\u30a4\u30c8\u306b\u57cb\u3081\u8fbc\u3093\u3067\u3044\u307e\u3059\u3002\u3053\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u306e\u304c<span style=\"font-family: 'courier new', courier, monospace;\">ad[.]example[.]com<\/span>\u3067\u3001\u3053\u308c\u306f\u30dc\u30d6\u304cWeb\u30b5\u30a4\u30c8\u3092\u30db\u30b9\u30c8\u3059\u308b\u306e\u306b\u4f7f\u3063\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3067\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u30dc\u30d6\u306f<span style=\"font-family: 'courier new', courier, monospace;\">ad[.]example[.]com<\/span>\u306eCNAME\u30ec\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3057\u3001\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u30c8\u30e9\u30c3\u30ab\u30fc\u3067\u3042\u308b<span style=\"font-family: 'courier new', courier, monospace;\">x[.]example[.]net<\/span>\u306e\u6240\u6709\u3059\u308b\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306b\u5411\u3051\u3066\u304a\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u30a2\u30ea\u30b9\u304c<span style=\"font-family: 'courier new', courier, monospace;\">www[.]example[.]com<\/span>\u3092\u95b2\u89a7\u3057\u3001\u30a2\u30ea\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u304c<span style=\"font-family: 'courier new', courier, monospace;\">ad[.]example[.]com<\/span>\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u308b\u3068\u3001\u305d\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306fWeb\u30b5\u30a4\u30c8\u3092\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3057\u3066\u3044\u308b\u306e\u3068\u540c\u3058\u30c9\u30e1\u30a4\u30f3\u3078\u9001\u3089\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u3002<\/p>\n<p>\u30a2\u30ea\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u306f<span style=\"font-family: 'courier new', courier, monospace;\">ad[.]example[.]com<\/span>\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u5185\u3067\u9001\u4fe1\u3055\u308c\u305fCookie\u3092\u30d5\u30a1\u30fc\u30b9\u30c8\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3001CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306b\u3088\u308bCookie\u53d7\u4fe1\u30fb\u8a2d\u5b9a\u304c\u53ef\u80fd\u306b\u306a\u308a\u3001\u3053\u3046\u3057\u305f\u6d3b\u52d5\u306b\u5bfe\u3059\u308b\u30d6\u30e9\u30a6\u30b6\u306e\u4fdd\u8b77\u304c\u56de\u907f\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3067\u306f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u3092\u8a31\u53ef\u3057\u305f\u5834\u5408\u3068\u540c\u30ec\u30d9\u30eb\u306e\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u306f\u884c\u3048\u307e\u305b\u3093\u304c\u3001\u3053\u3046\u3057\u305f\u624b\u6cd5\u306f\u30c7\u30fc\u30bf\u304c\u3069\u3053\u306b\u9001\u4fe1\u3055\u308c\u305f\u304b\u3068\u3044\u3046\u60c5\u5831\u3092\u96a0\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3057\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306b\u60c5\u5831\u304c\u6f0f\u308c\u305f\u308a\u3001\u65b0\u305f\u306a\u8106\u5f31\u6027\u304c\u751f\u3058\u308b\u306a\u3069\u306e<a href=\"https:\/\/arxiv.org\/abs\/2102.09301\">\u554f\u984c<\/a>\u306b\u3064\u306a\u304c\u308b\u304a\u305d\u308c\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_125430\" aria-describedby=\"caption-attachment-125430\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-125431 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/10\/word-image-30-ja.png\" alt=\"\u3053\u306e\u56f3\u306e\u30e6\u30fc\u30b6\u30fc\u306fwww[.]example[.]com\u3092\u95b2\u89a7\u3057\u3066\u3044\u308b\u3002\u30b5\u30a4\u30c8\u306b\u57cb\u3081\u8fbc\u307e\u308c\u305f\u5e83\u544a\u306fx[.]example[.]net\u306b\u3042\u308b\u304c\u3001Web\u30b5\u30a4\u30c8\u6240\u6709\u8005\u304cIP\u30a2\u30c9\u30ec\u30b91.2.3[.]4\u306b\u89e3\u6c7a\u3059\u308bCNAME\u30ec\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3057\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u3053\u306e\u8ffd\u8de1\u6d3b\u52d5\u306f\u96a0\u853d\u3055\u308c\u3066\u3057\u307e\u3046\" width=\"900\" height=\"511\" \/><figcaption id=\"caption-attachment-125430\" class=\"wp-caption-text\">\u56f33. CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306b\u3088\u308b\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u6d3b\u52d5\u306e\u96a0\u853d<\/figcaption><\/figure>\n<h3><a id=\"defenses\"><\/a>\u9632\u5fa1<\/h3>\n<p>CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306f\u3068\u304f\u306b\u76ee\u65b0\u3057\u3044\u6226\u7565\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u3053\u306e\u5206\u91ce\u306b\u306f\u3059\u3067\u306b\u8907\u6570\u306e\u9632\u5fa1\u7b56\u304c\u5c55\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u4f9d\u5b58\u3059\u308b\u30d6\u30e9\u30a6\u30b6\u62e1\u5f35\u6a5f\u80fd\u3082\u305d\u3046\u3057\u305f\u9632\u5fa1\u7b56\u306e\u4e00\u5f62\u5f0f\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u3088\u308b\u9632\u5fa1\u7b56\u306f\u62e1\u5f35\u6027\u306e\u9ad8\u3044CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u691c\u51fa\u65b9\u6cd5\u3068\u306f\u3044\u3048\u306a\u3044\u3067\u3057\u3087\u3046\u3002\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306b\u5411\u3051\u3089\u308c\u308b\u30d5\u30a1\u30fc\u30b9\u30c8\u30d1\u30fc\u30c6\u30a3\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u6570\u304c\u307b\u307c\u7121\u9650\u306b\u5b58\u5728\u3057\u3046\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p><a href=\"https:\/\/ublockorigin.com\/\">UBlock Origin<\/a>\u306f\u305d\u308c\u3068\u306f\u3079\u3064\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u3068\u308b\u62e1\u5f35\u6a5f\u80fd\u3067\u3001DNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u306b\u3082\u3068\u3065\u3044\u3066CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u691c\u51fa\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3053\u306e\u9632\u5fa1\u7b56\u306f<a href=\"https:\/\/github.com\/uBlockOrigin\/uBlock-issues\/issues\/780#issuecomment-552465524\">Firefox\u3067\u306e\u307f\u6709\u52b9<\/a>\u3067\u3059\u3002DNS API\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306b\u5236\u9650\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p><a href=\"https:\/\/privacybadger.org\/\">Privacy Badger<\/a>\u306f\u3001\u305d\u308c\u3068\u306f\u3059\u3053\u3057\u7570\u306a\u308b\u30a2\u30d7\u30ed\u30fc\u30c1\u306e\u30d6\u30e9\u30a6\u30b6\u30d7\u30e9\u30b0\u30a4\u30f3\u3067\u3001\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u306e\u632f\u308b\u821e\u3044\u3092\u63a2\u3057\u307e\u3059\u3002\u6b8b\u5ff5\u306a\u304c\u3089\u3053\u308c\u306f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3Cookie\u306e\u30d6\u30ed\u30c3\u30af\u306b\u3057\u304b\u6a5f\u80fd\u3057\u307e\u305b\u3093\u3002CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fc\u3067\u3042\u308b\u3053\u3068\u3092\u96a0\u853d\u3059\u308b\u306e\u3067\u3001\u3053\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3067\u306f\u4fdd\u8b77\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u30d6\u30e9\u30a6\u30b6\u30d9\u30fc\u30b9\u306e\u9632\u5fa1\u3068\u306f\u5bfe\u7167\u7684\u306b\u3001DNS\u30d9\u30fc\u30b9\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3067\u306f\u3001\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u306b\u4f7f\u308f\u308c\u308b\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u306a\u304f\u3001\u30c8\u30e9\u30c3\u30ab\u30fc\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306b\u3082\u3068\u3065\u3044\u3066\u901a\u4fe1\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<a href=\"https:\/\/adguard.com\/en\/blog\/cname-tracking.html\">AdGuard<\/a>\u3084<a href=\"https:\/\/medium.com\/nextdns\/nextdns-added-cname-uncloaking-support-becomes-the-first-cross-platform-solution-to-the-problem-e3f437f84342\">NextDNS<\/a>\u306a\u3069\u307b\u304b\u306e\u3044\u304f\u3064\u304b\u306e\u30b0\u30eb\u30fc\u30d7\u3082\u3053\u306e\u6226\u7565\u3067\u5e83\u544a\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306eDNS\u30d9\u30fc\u30b9\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u591a\u304f\u306e\u30d6\u30e9\u30a6\u30b6\u30d9\u30fc\u30b9\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3088\u308a\u3082\u62e1\u5f35\u6027\u304c\u9ad8\u3044\u306e\u3067\u3001\u5f0a\u793e\u3067\u306f\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u30d1\u30c3\u30b7\u30d6DNS\u30c7\u30fc\u30bf\u304b\u3089\u5f97\u305f\u77e5\u898b\u3092\u63f4\u7528\u3059\u308b\u3068\u3001\u65e2\u77e5\u306e\u30c8\u30e9\u30c3\u30ab\u30fc\u306b\u5c5e\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u306b\u89e3\u6c7a\u3055\u308c\u308b\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u60c5\u5831\u304c\u5f0a\u793e\u306eCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u691c\u51fa\u5668\u306e\u30d9\u30fc\u30b9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u7d50\u679c\u304b\u3089\u3001\u3069\u306e\u5e83\u544a\u4f1a\u793e\u306a\u3044\u3057\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u4f1a\u793e\u304cCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3067\u30c7\u30fc\u30bf\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u3044\u308b\u304b\u3092\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5f0a\u793e\u88fd\u54c1\u3092\u304a\u4f7f\u3044\u306e\u304a\u5ba2\u69d8\u306f\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3055\u308c\u305f\u5b8c\u5168\u4fee\u98fe\u30c9\u30e1\u30a4\u30f3\u540d(FQDN)\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2><a id=\"cname-cloaking-detections-in-action\"><\/a><strong>\u5b9f\u969b\u306eCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u691c\u51fa\u4e8b\u4f8b<\/strong><\/h2>\n<p>1\u30f6\u6708\u9593\u904b\u7528\u3057\u305f\u7d50\u679c\u3001\u79c1\u305f\u3061\u306eCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u691c\u51fa\u5668\u306f\u300138,000\u500b\u4ee5\u4e0a\u306e\u30eb\u30fc\u30c8\u30c9\u30e1\u30a4\u30f3\u4e0b\u306e\u7d0443,000\u500b\u306e\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u7279\u5b9a\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306f32\u306e\u7d44\u7e54\u306b\u5c5e\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u306b\u5411\u3051\u3089\u308c\u3066\u3044\u308bCNAME\u30ec\u30b3\u30fc\u30c9\u3092\u3082\u3061\u3001\u4e3b\u306b\u5e83\u544a\u3084\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u3092\u76ee\u7684\u3068\u3059\u308b\u5206\u6790\u306b\u30d5\u30a9\u30fc\u30ab\u30b9\u3057\u3066\u3044\u308b\u3082\u306e\u3067\u3057\u305f(\u56f34\u53c2\u7167)\u3002<a href=\"https:\/\/filters.adtidy.org\/extension\/chromium\/filters\/3.txt\">Adguard<\/a>\u3068<a href=\"https:\/\/easylist.to\/easylist\/easyprivacy.txt\">EasyPrivacy<\/a>\u304c\u4f5c\u6210\u3057\u305f\u30ea\u30b9\u30c8\u306f\u305d\u308c\u305e\u308c\u79c1\u305f\u3061\u304c\u691c\u51fa\u3057\u305f\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306e10%\u672a\u6e80\u306e\u307f\u3092\u30ab\u30d0\u30fc\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u4f7f\u3046\u30c9\u30e1\u30a4\u30f3\u306e98%\u306f\u3001\u5358\u4e00\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30c9\u30e1\u30a4\u30f3\u306e\u307f\u306b\u5411\u3051\u3089\u308c\u305f\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u3082\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u6570\u767e\u500b\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306f2\u3064\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30c9\u30e1\u30a4\u30f3\u306b\u4f9d\u5b58\u3057\u3066\u304a\u308a\u3001\u4e00\u63e1\u308a\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u304c3\u301c4\u500b\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u540c\u69d8\u306b\u3001CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u4f7f\u3046\u30c9\u30e1\u30a4\u30f3\u306e92%\u4ee5\u4e0a\u306f\u3001\u30af\u30ed\u30fc\u30ad\u30f3\u30b0FQDN\u304c1\u3064\u3060\u3051\u3067\u3057\u305f\u3002\u305f\u3060\u3057\u6570\u5343\u500b\u306e\u30c9\u30e1\u30a4\u30f3\u306f2\u3064\u4ee5\u4e0a\u3001\u6570\u500b\u306e\u30c9\u30e1\u30a4\u30f3\u304c10\u500b\u4ee5\u4e0a\u306e\u30af\u30ed\u30fc\u30ad\u30f3\u30b0FQDN\u3092\u4f7f\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u3053\u306e\u307b\u304b\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30c9\u30e1\u30a4\u30f3\u306b\u5411\u3051\u3089\u308c\u305f<a href=\"https:\/\/unit42.paloaltonetworks.jp\/wildcard-dns-abuse\/\">\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u30ec\u30b3\u30fc\u30c9<\/a>\u3092\u4f5c\u6210\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3082\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<figure id=\"attachment_125432\" aria-describedby=\"caption-attachment-125432\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-125433 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/10\/word-image-31-ja.png\" alt=\"\" width=\"900\" height=\"519\" \/><figcaption id=\"caption-attachment-125432\" class=\"wp-caption-text\">\u56f34. \u65b0\u305f\u306b\u691c\u51fa\u3055\u308c\u305f\u30c8\u30e9\u30c3\u30ab\u30fc\u5225\u30d5\u30a1\u30fc\u30b9\u30c8\u30d1\u30fc\u30c6\u30a3\u30c9\u30e1\u30a4\u30f3(\u65e5\u6b21)<\/figcaption><\/figure>\n<p>\u4e0a\u8ff0\u306e\u901a\u308a\u3001CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u305d\u308c\u3058\u305f\u3044\u304c\u672c\u8cea\u7684\u306b\u60aa\u6027\u306e\u6307\u6a19\u3068\u3044\u3046\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u306a\u304c\u3089\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fdd\u8b77\u6163\u884c\u304c\u640d\u306a\u308f\u308c\u308b\u3001\u30c7\u30fc\u30bf\u306e\u884c\u304d\u5148\u304c\u3042\u3044\u307e\u3044\u306b\u306a\u308b\u3001\u65b0\u305f\u306a\u8106\u5f31\u6027\u304c\u751f\u307e\u308c\u308b\u304b\u306d\u306a\u3044\u306a\u3069\u3001\u6570\u3005\u306e\u554f\u984c\u3082\u751f\u3058\u307e\u3059\u3002\u79c1\u305f\u3061\u306e\u691c\u51fa\u5668\u304c\u7279\u5b9a\u3057\u305f\u30af\u30ed\u30fc\u30ad\u30f3\u30b0FQDN\u306e\u306a\u304b\u304b\u30894,000\u500b\u5f37\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u8abf\u3079\u3066\u307f\u308b\u3068\u3001\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u304c\u3069\u306e\u3088\u3046\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b\u306b\u3064\u3044\u3066\u306e\u77e5\u898b\u304c\u5f97\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n<h3><a id=\"cloaking-third-party-cookies\"><\/a>\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3Cookie\u306e\u30af\u30ed\u30fc\u30ad\u30f3\u30b0<\/h3>\n<p>\u4e88\u60f3\u3055\u308c\u308b\u901a\u308a\u3001\u591a\u304f\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u3001\u30d5\u30a1\u30fc\u30b9\u30c8\u30d1\u30fc\u30c6\u30a3\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u751f\u6210\u3055\u308c\u305fCookie\u3092\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u9001\u4fe1\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u306b\u3001CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u4f7f\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001Adobe Experience Cloud\u3067CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u4f7f\u3063\u3066\u3044\u308bWeb\u30b5\u30a4\u30c8\u306e85%\u306f\u3001AMCV Cookie\u3092\u542b\u3080\u30af\u30ed\u30fc\u30ad\u30f3\u30b0FQDN\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002Adobe\u306e<a href=\"https:\/\/experienceleague.adobe.com\/docs\/id-service\/using\/intro\/cookies.html?lang=en#section-c55af54828dc4cce89f6118655d694c8\">\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u306b\u3088\u308b\u3068\u3001AMCV Cookie\u306f\u3001Web\u30b5\u30a4\u30c8\u6240\u6709\u8005\u304c\u3001Web\u30b5\u30a4\u30c8\u5168\u4f53\u307e\u305f\u306f\u6240\u6709\u8005\u306b\u5c5e\u3059\u308b\u8907\u6570\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u308f\u305f\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u3092\u8ffd\u8de1\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<p>Adobe\u3092\u4f7f\u3063\u3066\u3044\u308bWeb\u30b5\u30a4\u30c8\u306e3\u5206\u306e1\u5f37\u304c<a href=\"https:\/\/experienceleague.adobe.com\/docs\/core-services\/interface\/administration\/ec-cookies\/cookies-mc.html?lang=en\">s_ecid<\/a> Cookie\u3092\u9001\u4fe1\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u3053\u306eCookie\u306f\u300c\u30d5\u30a1\u30fc\u30b9\u30c8\u30d1\u30fc\u30c6\u30a3\u306e\u30b9\u30c6\u30fc\u30c8\u3067\u6301\u7d9a\u7684\u306bID\u3092\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u3059\u308b\u300d\u3053\u3068\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3082\u306e\u3067\u3001\u300cAMCV Cookie\u304c\u5931\u52b9\u3057\u305f\u5834\u5408\u306b\u53c2\u7167ID\u3068\u3057\u3066\u4f7f\u7528\u300d\u3055\u308c\u308b\u3082\u306e\u3067\u3059\u3002\u3053\u306eCookie\u306fCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u4f7f\u3046\u30c9\u30e1\u30a4\u30f3\u3067\u306e\u307f\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u3046\u591a\u304f\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u305d\u306e\u4ed6\u306eAdobe Experience Cloud Cookie\u306b\u306f\u3001<a href=\"https:\/\/experienceleague.adobe.com\/docs\/id-service\/using\/intro\/cookies.html?lang=en#section-c55af54828dc4cce89f6118655d694c8\">AMCVS<\/a> Cookie(\u30bb\u30c3\u30b7\u30e7\u30f3\u304c\u521d\u671f\u5316\u3055\u308c\u305f\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u308b\u30bb\u30c3\u30b7\u30e7\u30f3Cookie)\u3001<a href=\"https:\/\/experienceleague.adobe.com\/docs\/core-services\/interface\/administration\/ec-cookies\/cookies-analytics.html?lang=en#section-03aa90aa7e36427b8cb12dc4a0f0291e\">s_cc<\/a> Cookie (Cookie\u304c\u6709\u52b9\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308bCookie)\u3001<a href=\"https:\/\/experienceleague.adobe.com\/docs\/analytics\/implementation\/vars\/plugins\/getpercentpageviewed.html?lang=en\">s_ppv<\/a> Cookie (\u30b9\u30af\u30ed\u30fc\u30eb\u52d5\u4f5c\u306e\u6e2c\u5b9a\u306b\u4f7f\u7528)\u306a\u3069\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p>Mapp\u306e<span style=\"font-family: 'courier new', courier, monospace;\">wt-eu02[.]net<\/span>\u306b\u5411\u3051\u3089\u308c\u305fCNAME\u3092\u6301\u3064\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u306f\u3001\u8ca0\u8377\u5206\u6563\u3001Web\u30b5\u30a4\u30c8\u306e\u65b0\u898f\u8a2a\u554f\u8005\u304b\u518d\u8a2a\u554f\u8005\u304b\u3069\u3046\u304b\u306e\u5224\u65ad\u3001\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u306a\u3069\u306e\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b<a href=\"https:\/\/documentation.mapp.com\/1.0\/en\/which-cookies-are-set-by-mapp-intelligence-7211196.html\">\u3055\u307e\u3056\u307e\u306aCookie<\/a>\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u79c1\u305f\u3061\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001Mapp\u306b\u4f9d\u5b58\u3059\u308b\u30b5\u30a4\u30c8\u306e76\uff05\u304c\u3053\u308c\u3089\u306eCookie\u306e\u5c11\u306a\u304f\u3068\u30821\u3064\u3092\u4f7f\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>Salesforce\u3092\u4f7f\u3046\u30c9\u30e1\u30a4\u30f3\u306e\u7d0414\uff05\u304c\u3001\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306b<a href=\"https:\/\/help.salesforce.com\/s\/articleView?id=sf.pardot_basics_cookies.htm&amp;type=5\">visitor_id Cookie\u3068visitor_id&lt;accountid&gt;-hash Cookie<\/a>\u3092\u9001\u4fe1\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<h2><a id=\"evading-defenses-cookie-syncing\"><\/a><strong>Cookie\u540c\u671f\u306b\u3088\u308b\u9632\u5fa1\u306e\u56de\u907f<\/strong><\/h2>\n<p>Salesforce\u306eCookie\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u5c0e\u5165\u3057\u305f\u4fdd\u8b77\u6a5f\u80fd\u3092\u30c8\u30e9\u30c3\u30ab\u30fc\u304c\u3084\u308a\u3059\u3054\u3059\u305f\u3081\u306e\u65b9\u6cd5\u306e\u8208\u5473\u6df1\u3044\u4f8b\u3068\u3044\u3048\u307e\u3059\u3002Salesforce\u306f\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3Cookie\u306b\u95a2\u3059\u308bSafari\u306eIntelligent Tracking Prevention (ITP) 1.2\u306b\u3088\u308b\u5236\u9650\u306b\u7279\u7570\u7684\u306b\u5bfe\u5fdc\u3059\u308b<a href=\"https:\/\/www.linkedin.com\/pulse\/pardot-cookie-how-impacted-intelligent-tracking-arthur-imirzian\">\u30a2\u30d7\u30ed\u30fc\u30c1<\/a>\u3092\u958b\u767a\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u3068\u308bSalesforce\u306e\u9867\u5ba2\u306f\u3001<span style=\"font-family: 'courier new', courier, monospace;\">pi.pardot[.]com<\/span>\u304b\u3089<span style=\"font-family: 'courier new', courier, monospace;\">visit_id<\/span> Cookie\u3068<span style=\"font-family: 'courier new', courier, monospace;\">visit_idhash<\/span> Cookie\u3092\u8a2d\u5b9a\u3059\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u53d6\u5f97\u3059\u308b\u30b3\u30fc\u30c9\u3092Web\u30b5\u30a4\u30c8\u306b\u57cb\u3081\u8fbc\u307f\u3001\u9867\u5ba2\u306e\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u53d6\u5f97\u3057\u307e\u3059(\u56f35\u53c2\u7167)\u3002<\/p>\n<p><figure id=\"attachment_125434\" aria-describedby=\"caption-attachment-125434\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-125435 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/10\/word-image-32.png\" alt=\"\u30b9\u30af\u30ea\u30d7\u30c8\u304cpi.pardot[.]com\u304b\u3089\u53d6\u5f97\u3055\u308c\u308b\" width=\"900\" height=\"370\" \/><figcaption id=\"caption-attachment-125434\" class=\"wp-caption-text\">\u56f35. \u30b9\u30af\u30ea\u30d7\u30c8\u304cpi.pardot[.]com\u304b\u3089\u53d6\u5f97\u3055\u308c\u308b<\/figcaption><\/figure>\u53d6\u5f97\u3055\u308c\u305f\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u4f55\u3082\u3057\u307e\u305b\u3093\u304c(\u56f36\u53c2\u7167)\u3001HTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u306f\u540c\u4e00\u306e2\u3064\u306eCookie\u3092\u8a2d\u5b9a\u3057\u307e\u3059(\u56f37\u53c2\u7167)\u3002<\/p>\n<figure id=\"attachment_125436\" aria-describedby=\"caption-attachment-125436\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-125437 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/10\/word-image-33.png\" alt=\"\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u53d6\u5f97\u3057\u305f\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u4f55\u3082\u3057\u306a\u3044\u3002\" width=\"600\" height=\"173\" \/><figcaption id=\"caption-attachment-125436\" class=\"wp-caption-text\">\u56f36. \u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u53d6\u5f97\u3057\u305f\u30b9\u30af\u30ea\u30d7\u30c8<\/figcaption><\/figure>\n<figure id=\"attachment_125438\" aria-describedby=\"caption-attachment-125438\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-125439 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/10\/word-image-34.png\" alt=\"HTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u306b\u306fvisit_id\u3068visit_id&lt;acountid&gt;hash Cookie\u304c\u8a2d\u5b9a\u3055\u308c\u308b\u3002\" width=\"900\" height=\"417\" \/><figcaption id=\"caption-attachment-125438\" class=\"wp-caption-text\">\u56f37 \u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u306f\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u8fd4\u3059<\/figcaption><\/figure>\n<p>\u3053\u306e\u51e6\u7406\u306b\u3088\u308a\u540c\u4e00\u306eCookie\u304c\u7570\u306a\u308b\u30c9\u30e1\u30a4\u30f3\u3067\u4f5c\u6210\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a(\u56f38\u53c2\u7167)\u307e\u3059\u3002\u3053\u308c\u304cCookie\u540c\u671f\u306e\u5178\u578b\u4f8b\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_125440\" aria-describedby=\"caption-attachment-125440\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-125441 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/10\/word-image-35.png\" alt=\"\u30c8\u30e9\u30c3\u30ab\u30fc\u7528\u306evisit_id Cookie\u3068visit_id&lt;acountid&gt;hash Cookie\u3002\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u306f\u540c\u4e00\u3002\" width=\"900\" height=\"116\" \/><figcaption id=\"caption-attachment-125440\" class=\"wp-caption-text\">\u56f38. \u30c8\u30e9\u30c3\u30ab\u30fc\u30c9\u30e1\u30a4\u30f3\u3068\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u306b\u540c\u3058Cookie\u304c\u8a2d\u5b9a\u3055\u308c\u308b<\/figcaption><\/figure>\n<h3><a id=\"cookie-leaks\"><\/a>Cookie\u306e\u6d41\u51fa<\/h3>\n<p>CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306e\u5229\u7528\u304c\u307e\u306d\u304f\u7d50\u679c\u306e\u3072\u3068\u3064\u306b\u3001\u307b\u304b\u306e\u30d5\u30a1\u30fc\u30b9\u30c8\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u304c\u30af\u30ed\u30fc\u30ad\u30f3\u30b0FQDN\u306b\u81ea\u52d5\u7684\u306b\u9001\u4fe1\u3055\u308c\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u3052\u3089\u308c\u307e\u3059\u3002\u610f\u5916\u306b\u3082\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3067\u3082\u3063\u3068\u3082\u3088\u304f\u898b\u3089\u308c\u305fCookie\u306f\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u4f7f\u3046\u30c8\u30e9\u30c3\u30ab\u30fc\u304c\u8a2d\u5b9a\u3057\u305f\u3082\u306e\u3067\u306f\u306a\u304f\u3001<a href=\"https:\/\/developers.google.com\/analytics\/devguides\/collection\/gtagjs\/cookie-usage\">Google Analytics<\/a>\u306b\u95a2\u9023\u3059\u308b\u3082\u306e\u3067\u3057\u305f(\u88681\u53c2\u7167)\u3002<\/p>\n<table style=\"width: 93.1247%;\">\n<tbody>\n<tr>\n<td style=\"width: 20.1235%; background-color: #b3adad;\"><b>Cookie<\/b><\/td>\n<td style=\"width: 44.1975%; background-color: #b3adad;\"><b>\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u306bCookie\u3092\u9001\u4fe1\u3057\u3066\u3044\u308bWeb\u30b5\u30a4\u30c8\u6570<\/b><\/td>\n<td style=\"width: 96.2963%; background-color: #b3adad;\"><b>Cookie\u3092\u53d7\u4fe1\u3059\u308b\u30c8\u30e9\u30c3\u30ab\u30fc\u306e\u30c9\u30e1\u30a4\u30f3\u6570<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%; background-color: #73add9;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">_ga<\/span><\/td>\n<td style=\"width: 44.1975%; background-color: #73add9;\"><span style=\"font-weight: 400;\">322<\/span><\/td>\n<td style=\"width: 96.2963%; background-color: #73add9;\"><span style=\"font-weight: 400;\">18<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%; background-color: #73add9;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">_gid<\/span><\/td>\n<td style=\"width: 44.1975%; background-color: #73add9;\"><span style=\"font-weight: 400;\">299<\/span><\/td>\n<td style=\"width: 96.2963%; background-color: #73add9;\"><span style=\"font-weight: 400;\">17<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%; background-color: #73add9;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">_gcl_au<\/span><\/td>\n<td style=\"width: 44.1975%; background-color: #73add9;\"><span style=\"font-weight: 400;\">191<\/span><\/td>\n<td style=\"width: 96.2963%; background-color: #73add9;\"><span style=\"font-weight: 400;\">14<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%; background-color: #73add9;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">GoogleAnalytics_gat<\/span><\/td>\n<td style=\"width: 44.1975%; background-color: #73add9;\"><span style=\"font-weight: 400;\">149<\/span><\/td>\n<td style=\"width: 96.2963%; background-color: #73add9;\"><span style=\"font-weight: 400;\">10<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%; background-color: #73add9;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">GoogleAnalytcs_ga<\/span><\/td>\n<td style=\"width: 44.1975%; background-color: #73add9;\"><span style=\"font-weight: 400;\">95<\/span><\/td>\n<td style=\"width: 96.2963%; background-color: #73add9;\"><span style=\"font-weight: 400;\">15<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">Adobe_AMCV<\/span><\/td>\n<td style=\"width: 44.1975%;\"><span style=\"font-weight: 400;\">92<\/span><\/td>\n<td style=\"width: 96.2963%;\"><span style=\"font-weight: 400;\">2<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">Adobe_AMCVS<\/span><\/td>\n<td style=\"width: 44.1975%;\"><span style=\"font-weight: 400;\">91<\/span><\/td>\n<td style=\"width: 96.2963%;\"><span style=\"font-weight: 400;\">2<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">S_CC<\/span><\/td>\n<td style=\"width: 44.1975%;\"><span style=\"font-weight: 400;\">85<\/span><\/td>\n<td style=\"width: 96.2963%;\"><span style=\"font-weight: 400;\">3<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%; background-color: #73add9;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">GoogleAnalytics_gtm<\/span><\/td>\n<td style=\"width: 44.1975%; background-color: #73add9;\"><span style=\"font-weight: 400;\">80<\/span><\/td>\n<td style=\"width: 96.2963%; background-color: #73add9;\"><span style=\"font-weight: 400;\">9<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.1235%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">Act-On Beacon Cookie<\/span><\/td>\n<td style=\"width: 44.1975%;\"><span style=\"font-weight: 400;\">75<\/span><\/td>\n<td style=\"width: 96.2963%;\"><span style=\"font-weight: 400;\">2<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><span style=\"font-size: 10pt; color: #999999;\"><em>\u88681 \u30ea\u30af\u30a8\u30b9\u30c8\u5185\u3067\u306e\u89b3\u6e2c\u6570\u304c\u591a\u304b\u3063\u305fCookie\u3002\u9752\u5730\u306e\u884c\u306fGoogle Analytics\u306eCookie\u3092\u8868\u3059 <\/em><\/span><\/p>\n<p>\u30af\u30ed\u30fc\u30ad\u30f3\u30b0FQDN\u306b\u9001\u3089\u308c\u308b\u30ea\u30af\u30a8\u30b9\u30c8\u3067\u3088\u304f\u898b\u3089\u308c\u305f\u307b\u304b\u306eCookie\u3068\u3057\u3066\u306f\u3001<a href=\"https:\/\/help.hotjar.com\/hc\/en-us\/articles\/6952777582999\">Hotjar<\/a>\u3001<a href=\"https:\/\/help.ads.microsoft.com\/#apex\/ads\/ja\/53056\/2\/#exp7018\">Microsoft<\/a>\u3001<a href=\"https:\/\/www.dynatrace.com\/support\/help\/how-to-use-dynatrace\/data-privacy-and-security\/data-privacy\/cookies\">Dynatrace<\/a>\u306b\u5c5e\u3059\u308b\u3082\u306e\u304c\u3042\u3052\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b5\u30fc\u30d3\u30b9\u306f\u3044\u305a\u308c\u3082\u5f0a\u793e\u306eCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u95a2\u4fc2\u8005\u306e\u30ea\u30b9\u30c8\u306b\u306f\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<h2><a id=\"conclusion\"><\/a>\u7d50\u8ad6<\/h2>\n<p>\u591a\u304f\u306eWeb\u30b5\u30a4\u30c8\u304c\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fcCookie\u306b\u307e\u3064\u308f\u308b\u30d6\u30e9\u30a6\u30b6\u306e\u5236\u9650\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306bCNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3057\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30c7\u30fc\u30bf\u5206\u6790\u30fb\u5e83\u544a\u30fb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u4f01\u696d\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u6d3b\u7528\u3057\u305f\u3044\u5834\u5408\u306b\u306f\u4fbf\u5229\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>Cookie\u3084\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u60c5\u5831\u3092\u6271\u3046\u4f01\u696d\u306e\u63d0\u4f9b\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u306f\u5efa\u8a2d\u7684\u306a\u7528\u9014\u306b\u3082\u4f7f\u3048\u307e\u3059\u304c\u3001CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u306b\u95a2\u3059\u308b\u6df1\u523b\u306a\u61f8\u5ff5\u3092\u3082\u305f\u3089\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305a\u7b2c\u4e00\u306b\u3001\u8ab0\u304c\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u3063\u3066\u3044\u308b\u306e\u304b\u3042\u3044\u307e\u3044\u306b\u306a\u308a\u3001\u81ea\u5206\u306e\u60c5\u5831\u304c\u3069\u3046\u6271\u308f\u308c\u308b\u306e\u304b\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3057\u3065\u3089\u304f\u306a\u308a\u307e\u3059\u3002\u7b2c\u4e8c\u306b\u3001Cookie\u306e\u6d41\u51fa\u304c\u539f\u56e0\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u304c\u4e0d\u7528\u610f\u306b\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306b\u308f\u305f\u3063\u3066\u3057\u307e\u3046\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u306e\u4f7f\u7528\u306f\u3053\u306e\u307b\u304b\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fdd\u8b77\u3092\u5f31\u3081\u305f\u3044\u3068\u3044\u3046\u610f\u56f3\u306e\u3042\u3089\u308f\u308c\u3068\u3082\u53d7\u3051\u53d6\u308c\u307e\u3059\u3002\u5b9f\u969b\u79c1\u305f\u3061\u306f\u3001\u3053\u308c\u304cCookie\u306e\u540c\u671f\u306a\u3069\u3001\u3079\u3064\u306e\u4e0d\u5be9\u306a\u6163\u884c\u3068\u3042\u308f\u305b\u3066\u4f7f\u308f\u308c\u3066\u3044\u308b\u3088\u3046\u3059\u3092\u89b3\u6e2c\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u3067\u306f\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/security-subscriptions\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u30af\u30e9\u30a6\u30c9\u914d\u4fe1\u578b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30fc\u30d3\u30b9<\/a>\u3092\u901a\u3058\u3001CNAME\u30af\u30ed\u30fc\u30ad\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u3092\u691c\u51fa\u3057\u3066\u300cadtracking (\u8ffd\u8de1\u578b\u5e83\u544a)\u300d\u30ab\u30c6\u30b4\u30ea\u306b\u306b\u5272\u308a\u5f53\u3066\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30fc\u30d3\u30b9\u306b\u306f<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/dns-security\">DNS\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/a>\u3084<a href=\"https:\/\/docs.paloaltonetworks.com\/pan-os\/10-1\/pan-os-new-features\/url-filtering-features\/advanced-url-filtering.html\">\u9ad8\u5ea6\u306aURL\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/a>\u306a\u3069\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u3053\u306e\u691c\u77e5\u5668\u3092\u901a\u3058\u3001\u5f0a\u793e\u306e\u304a\u5ba2\u69d8\u306f\u3001\u81ea\u7d44\u7e54\u306e\u30c7\u30fc\u30bf\u304c\u3069\u3053\u306b\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u53ef\u8996\u5316\u3057\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<h2><a id=\"additional-resources\"><\/a>\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/h2>\n<ul>\n<li><a href=\"https:\/\/ieeexplore.ieee.org\/stamp\/stamp.jsp?tp=&amp;arnumber=9403411\">CNAME Cloaking-Based Tracking on the Web: Characterization, Detection and Protection<\/a><\/li>\n<li><a href=\"https:\/\/arxiv.org\/pdf\/2102.09301.pdf\">The CNAME of the Game: Large-scale Analysis of DNS-based Tracking Evasion<\/a><\/li>\n<li><a href=\"https:\/\/arxiv.org\/abs\/2202.01498\">Towards Understanding First-Party Cookie Tracking in the Field<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 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