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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.
Cybersecurity expert Bill Woodcock of Packet Clearing House noted that the blocked DNS queries coming from Ukraine clearly show an increase in phishing and malware attacks against Ukrainians, and noted that the Polish numbers were also higher than usual because 70%, or 1.4 million, of the Ukrainian refugees were in Poland at the time. [53]
The Bloomberg article quotes a source from the cybersecurity firm Crowdstrike Holdings Inc. which states that the ransomware used in the attack was linked to "strains known variously as “Death Kitty,” “Hello Kitty” and “Five Hands.”" and likely originated from Russia or Eastern Europe. [8]
A cyberattack is any type of offensive maneuver employed by individuals or whole organizations that targets computer information systems, infrastructures, computer networks, and/or personal computer devices by various means of malicious acts usually originating from an anonymous source that either steals, alters, or destroys a specified target by hacking into a susceptible system.
In April 2021, a member of the Conti Group claimed to have an anonymous journalist take a 5% cut of ransomware payments by pressuring victims to pay. [20] During the Russian invasion of Ukraine of 2022, the Conti Group announced its support for Russia and threatened to implement "retaliatory measures" if cyber-attacks were launched against the ...
On 13 May the cybersecurity provider for the HSE emailed the Security Operations team that there had been unhandled threats on at least 16 systems since 7 May. [13] The Security Operations team had the server team restart servers. [13] The HSE was alerted to the attack at 4am on 14 May 2021. [14]
Security Incidents & Response Against Cyber Attacks. Springer International Publishing. pp. 13– 29. ISBN 978-3-030-69174-5. Crawley, Kim (2021). 8 Steps to Better Security: A Simple Cyber Resilience Guide for Business. John Wiley & Sons. ISBN 978-1-119-81124-4. Daswani, Neil; Elbayadi, Moudy (2021). Big Breaches: Cybersecurity Lessons for ...
The second cyber-attack was carried out on 18 May 2021. [4] The website of the Chinese Embassy operating in Sri Lanka, The websites of the Health Ministry, Energy Ministry and the Rajarata University websites were affected by this cyberattack. [5] This cyber attack conducted by a group called 'Tamil Eelam Cyber Force'. [6]