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  2. 2021 Microsoft Exchange Server data breach - Wikipedia

    en.wikipedia.org/wiki/2021_Microsoft_Exchange...

    The first breach of a Microsoft Exchange Server instance was observed by cybersecurity company Volexity on 6 January 2021. [1] By the end of January, Volexity had observed a breach allowing attackers to spy on two of their customers, and alerted Microsoft to the vulnerability. After Microsoft was alerted of the breach, Volexity noted the ...

  3. Hafnium (group) - Wikipedia

    en.wikipedia.org/wiki/HAFNIUM_(group)

    Microsoft named Hafnium as the group responsible for the 2021 Microsoft Exchange Server data breach, and alleged they were "state-sponsored and operating out of China". [3] [4] According to Microsoft, they are based in China but primarily use United States-based virtual private servers, [6] and have targeted "infectious disease researchers, law firms, higher education institutions, defense ...

  4. Microsoft Exchange Server - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Exchange_Server

    www.microsoft.com /en-us /microsoft-365 /exchange /email. Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusively on Windows Server operating systems. The first version was called Exchange Server 4.0, to position it as the successor to the related Microsoft Mail 3.5.

  5. 2020 United States federal government data breach - Wikipedia

    en.wikipedia.org/wiki/2020_United_States_federal...

    [94] [95] [14] The attacker exploited a vulnerability in the organization's Microsoft Exchange Control Panel, and used a novel method to bypass multi-factor authentication. [14] Later, in June and July 2020, Volexity observed the attacker utilizing the SolarWinds Orion trojan; i.e. the attacker used Microsoft vulnerabilities (initially) and ...

  6. Supply chain attack - Wikipedia

    en.wikipedia.org/wiki/Supply_chain_attack

    Volexity, a cybersecurity firm, has reconstructed the attack sequence on an unnamed US think tank: first, the attacker exploited a remote code execution vulnerability in an on-premise Microsoft Exchange server; [54] after that vulnerability was remedied, the attacker exploited security holes in the SolarWinds Orion platform, which were exposed ...

  7. Hive (ransomware) - Wikipedia

    en.wikipedia.org/wiki/Hive_(ransomware)

    Investigation by cybersecurity firm revealed, in April 2022, that an affiliate of the Hive ransomware group was targeting Microsoft Exchange servers with vulnerability to ProxyShell security issues, deploying a variety of backdoors, such as Cobalt Strike beacon, subsequently executing network reconnaissance to steal administrator account ...

  8. History of Microsoft Exchange Server - Wikipedia

    en.wikipedia.org/wiki/History_of_Microsoft...

    History of Microsoft Exchange Server. The first release of Microsoft Exchange Server was version 4.0 in April 1996, when it was sold as an upgrade to Microsoft Mail 3.5. Before that, Microsoft Mail v2.0 (written by Microsoft) was replaced in 1991 by "Microsoft Mail for PC Networks v2.1", [1] based on Network Courier from its acquisition of ...

  9. EternalBlue - Wikipedia

    en.wikipedia.org/wiki/EternalBlue

    EternalBlue[5] is a computer exploit software developed by the U.S. National Security Agency (NSA). [6] It is based on a vulnerability in Microsoft Windows that allowed users to gain access to any number of computers connected to a network. The NSA knew about this vulnerability but did not disclose it to Microsoft for several years, since they ...

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