• cyberattacks and data breaches began in January 2021 after four zero-day exploits were discovered in on-premises Microsoft Exchange Servers, giving attackers...
    39 KB (3,582 words) - 12:54, 1 April 2025
  • Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusively on Windows Server operating systems. The...
    28 KB (2,972 words) - 16:33, 22 September 2024
  • Hafnium (group) (category Use dmy dates from March 2021)
    closely connected to APT40. Microsoft named Hafnium as the group responsible for the 2021 Microsoft Exchange Server data breach, and alleged they were "state-sponsored...
    8 KB (608 words) - 12:54, 1 April 2025
  • exploit four zero-day vulnerabilities in Microsoft Exchange Server, in the 2021 Microsoft Exchange Server data breach. This web shell was dropped when one...
    5 KB (434 words) - 05:16, 29 January 2024
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    remote working, multi-factor authentication, and the 2021 Microsoft Exchange Server data breach. Their published works include a white paper on defending...
    8 KB (568 words) - 02:33, 18 April 2025
  • Thumbnail for 2020 United States federal government data breach
    ambient cyber-conflict. 2008 cyberattack on United States 2021 Microsoft Exchange Server data breach Cyberwarfare in the United States Cyberwarfare by Russia...
    189 KB (13,647 words) - 15:22, 10 June 2025
  • This is a list of reports about data breaches, using data compiled from various sources, including press reports, government news releases, and mainstream...
    223 KB (11,899 words) - 18:55, 11 June 2025
  • data breach against the U.S. in the previous year behind the 2020 United States federal government data breach and the 2021 Microsoft Exchange Server...
    6 KB (532 words) - 12:54, 1 April 2025
  • List of hacker groups (category Articles needing additional references from September 2021)
    Possibly with Chinese associations, responsible for the 2021 Microsoft Exchange Server data breach. Hive was a notorious ransomware as a service (RaaS) criminal...
    19 KB (2,014 words) - 17:44, 4 June 2025
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    services such as Exchange, SharePoint, and Lync Server, and Office on the web. Some plans also included licenses for the Microsoft Office 2010 software...
    93 KB (6,822 words) - 01:44, 11 June 2025
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    Microsoft Store. In the enterprise and development fields, Microsoft most notably provides the Azure cloud computing platform, Microsoft SQL Server database...
    223 KB (19,642 words) - 15:09, 12 June 2025
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    12, 2023. Retrieved September 18, 2023. Microsoft blamed for “a cascade of security failures” in Exchange breach report Azure Documentation Archived December...
    86 KB (7,082 words) - 21:02, 14 June 2025
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    of perpetrating several cyberattacks, most notably the 2021 Microsoft Exchange Server data breach. In December 2009 and January 2010 a cyberattack, known...
    69 KB (6,666 words) - 02:22, 24 May 2025
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    Alleged Chinese espionage in the United States, such as the 2021 Microsoft Exchange Server data breach Alleged economic coercion of American allies such as Australia...
    19 KB (1,998 words) - 04:04, 28 January 2025
  • March 2021) Microsoft Exchange Server hacks 'doubling' every two hours Shadowserver (28 Mar 2021) Attackers Breach 21,000 Microsoft Exchange Servers, Install...
    64 KB (6,902 words) - 12:15, 24 April 2025
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    and Microsoft now each consume more power than some fairly big countries". TechRadar. Retrieved 2024-07-18. "Report to Congress on Server and Data Center...
    91 KB (8,543 words) - 16:08, 5 June 2025
  • REvil (section 2021)
    linked to the 2021 Microsoft Exchange Server data breach by cybersecurity firm Advanced Intel, which found first signs of Acer servers being targeted...
    33 KB (3,125 words) - 06:49, 17 February 2025
  • Chinese intelligence activity abroad (category Articles with dead external links from March 2021)
    of perpetrating several cyberattacks, most notably the 2021 Microsoft Exchange Server data breach. While some attacks were for-profit ransomware incidents...
    262 KB (24,193 words) - 21:04, 7 June 2025
  • the programmer forum Experts-Exchange. In 2009, they started additional sites based on the Stack Overflow model: Server Fault for questions related to...
    56 KB (4,814 words) - 02:48, 8 June 2025
  • as 2021 Microsoft Exchange Server data breach, before sifting through the acquired data in search of valuable information. According to Microsoft, the...
    29 KB (2,712 words) - 07:34, 1 April 2025
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    specializing in cloud-based email management for Google Workspace, Microsoft Exchange and Microsoft Office 365, including security, archiving, and continuity services...
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  • Chinese state-sponsored actors for their involvement in the 2021 Microsoft Exchange Server data breach. In response, the Chinese Embassy in New Zealand described...
    77 KB (7,136 words) - 00:55, 31 May 2025
  • Thumbnail for Andrew Little (New Zealand politician)
    Chinese state-sponsored actors for their involvement in the 2021 Microsoft Exchange Server data breach. In response, the Chinese Embassy in New Zealand rejected...
    82 KB (6,081 words) - 01:43, 6 June 2025
  • Transport Layer Security (category Articles containing potentially dated statements from July 2021)
    compression, BREACH exploits HTTP compression which cannot realistically be turned off, as virtually all web servers rely upon it to improve data transmission...
    178 KB (17,519 words) - 19:55, 15 June 2025
  • Control Protocol against MITM attacks. In such structures, clients and servers exchange certificates which are issued and verified by a trusted third party...
    23 KB (2,561 words) - 13:24, 8 June 2025
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    Verisign (category Use American English from March 2021)
    would not provide details about the loss of data. Verisign was widely criticized for not disclosing the breach earlier and apparently attempting to hide...
    34 KB (3,339 words) - 18:11, 10 June 2025
  • that had an MD5 collision with a valid certificate issued by a Microsoft Terminal Server licensing certificate that used the broken MD5 hash algorithm...
    46 KB (5,334 words) - 15:21, 13 May 2025
  • that an affiliate of the Hive ransomware group was targeting Microsoft Exchange servers with vulnerability to ProxyShell security issues, deploying a...
    30 KB (2,944 words) - 14:25, 2 May 2025
  • SolarWinds (category Companies listed on the New York Stock Exchange)
    those who sold the stock had not been aware of the breach at the time. In November 2021 Microsoft issued an alert in relation to the advanced persistent...
    66 KB (4,834 words) - 23:45, 21 April 2025
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    "Adobe's source code was parked on hackers' unprotected server | PCWorld". October 11, 2013. "Breach at PR Newswire linked to Adobe exploit". nakedsecurity...
    82 KB (7,265 words) - 00:34, 18 June 2025