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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 ...
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 ...
The attackers exploited flaws in Microsoft products, services, and software distribution infrastructure. [23] [15] [9] [18]At least one reseller of Microsoft cloud services was compromised by the attackers, constituting a supply chain attack that allowed the attackers to access Microsoft cloud services used by the reseller's customers.
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.
The hacked server belonged to the United Nations Department of Economic and Social Affairs. [141] May: Anonymous declared a large hack on May 28, three days after the murder of George Floyd. An individual claiming to represent Anonymous stated that "We are Legion. We do not forgive. We do not forget. Expect us." in a now-deleted video.
Kaseya VSA ransomware attack. On 2 July 2021, a number of managed service providers (MSPs) and their customers became victims of a ransomware attack perpetrated by the REvil group, [1] causing widespread downtime for over 1,000 companies. [2][3] The attack was carried out by exploiting a vulnerability in VSA (Virtual System Administrator), a ...
The hack was carried out on the provider's system: either hacking the code itself at the provider, or a hack re-routing download requests to another server. Press reports at the time make it clear this was a supply chain attack, but the attack vector used is not specified.
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 ...