Microsoft Exchange Server Archives - Unit42

A conceptual image representing espionage, such as the attempted (but unsuccessful) credential harvesting discussed here.

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

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

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8 min. read

Conceptual image illustrating ransomware, such as the DearCry ransomware discussed here.

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Threat Assessment: DearCry Ransomware

By Unit 42
March 12, 2021 at 2:50 PM

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5 min. read

Conceptual image representing the concept of global attackers, such as those featured in this Microsoft Exchange Server Attack timeline.

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Microsoft Exchange Server Attack Timeline

By Unit 42
March 11, 2021 at 12:10 PM

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5 min. read

An image representing the concept of tutorials, such as the steps laid out here for remediating the Microsoft Exchange Server vulnerabilities

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Remediation Steps for the Microsoft Exchange Server Vulnerabilities

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

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4 min. read

Conceptual image symbolizing the adversarial relationship between security professionals and threat actors such as Hafnium, whose attacks involving the China Chopper webshell are discussed here

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Analyzing Attacks Against Microsoft Exchange Server With China Chopper Webshells

By Jeff White
March 8, 2021 at 2:24 PM

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10 min. read

Conceptual image representing vulnerabilities, such as the four zero-day Microsoft Exchange Server vulnerabilities discussed in this post.

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

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

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6 min. read