Logo
Unit42 Logo
  • Tools
  • ATOMs
  • Security Consulting
  • About Us
  • Under Attack?

Posts tagged with: CVE-2021-26858

Actor Exploits Microsoft Exchange Server Vulnerabilities, Cortex XDR Blocks Harvesting of CredentialsA conceptual image representing espionage, such as the attempted (but unsuccessful) credential harvesting discussed here.
45,128
people reacted

Actor Exploits Microsoft Exchange Server Vulnerabilities, Cortex XDR Blocks Harvesting of Credentials

  • By Robert Falcone
  • April 15, 2021 at 6:00 AM

26

8 min. read

Remediation Steps for the Microsoft Exchange Server VulnerabilitiesAn image representing the concept of tutorials, such as the steps laid out here for remediating the Microsoft Exchange Server vulnerabilities
57,561
people reacted

Remediation Steps for the Microsoft Exchange Server Vulnerabilities

  • By Unit 42
  • March 9, 2021 at 9:40 AM

32

4 min. read

Trending

  • Unit 42 Attack Surface Threat Research: Constant Change in Cloud Contributes to 45% of New High/Critical Exposures Per Month by Unit 42
  • Threat Group Assessment: Muddled Libra (Updated) by Unit 42
  • Wireshark Tutorial: Display Filter Expressions by Brad Duncan
  • Wireshark Tutorial: Changing Your Column Display by Brad Duncan
  • Threat Group Assessment: Turla (aka Pensive Ursa) by Unit 42
Threat Assessment: Active Exploitation of Four Zero-Day Vulnerabilities in Microsoft Exchange ServerConceptual image representing vulnerabilities, such as the four zero-day Microsoft Exchange Server vulnerabilities discussed in this post.
65,196
people reacted

Threat Assessment: Active Exploitation of Four Zero-Day Vulnerabilities in Microsoft Exchange Server

  • By Unit 42
  • March 3, 2021 at 3:30 PM

419

6 min. read

Popular Resources

  • Resource Center
  • Blog
  • Communities
  • Tech Docs
  • Unit 42
  • Sitemap

Legal Notices

  • Privacy
  • Terms of Use
  • Documents

Account

  • Manage Subscriptions
  •  
  • Report a Vulnerability

© 2023 Palo Alto Networks, Inc. All rights reserved.