Ransomware attack on Exchange Server due to ProxyShell Vulnerabilities

LockFile ransomware attack on Exchange Server On April 21, 2021, Orange Tsai, a Principal Security Researcher, found three vulnerabilities in the Microsoft Exchange Server in the Pwn2Own 2021 hacking contest. These vulnerabilities allowed an unauthorized remote code execution in the Exchange Server. Microsoft has fixed these loopholes in May, but somehow a team of hackers…

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