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A global wave of cyberattacks and data breaches began in January 2021 after four zero-day exploits were discovered in on-premises Microsoft Exchange Servers, giving attackers full access to user emails and passwords on affected servers, administrator privileges on the server, and access to connected devices on the same network.
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 ...
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 ...
Experts are still unsure of the hackers' motivations, and whether the incident may have been a "test run" for a larger attack.
In March 2021, the Biden administration expressed growing concerns over the hack, and White House Press Secretary Jen Psaki called it “an active threat”. [241] Meanwhile The New York Times reported that the US government was planning economic sanctions as well as "a series of clandestine actions across Russian networks" in retaliation.
On 18 March 2021, an REvil affiliate claimed on their data leak site that they had downloaded data from multinational hardware and electronics corporation Acer, as well as installing ransomware, which has been linked to the 2021 Microsoft Exchange Server data breach by cybersecurity firm Advanced Intel, which found first signs of Acer servers ...
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.
On 14 May 2021, the Health Service Executive (HSE) of Ireland suffered a major ransomware cyberattack which caused all of its IT systems nationwide to be shut down. [1][2][3][4] It was the most significant cybercrime attack on an Irish state agency and the largest known attack against a health service computer system. [5][6] Bloomberg News ...
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