Microsoft Exchange Zero-Day Vulnerability Exposes Companies Globally
Criminal and nation-state actors are exploiting at least four new zero-day vulnerabilities in Microsoft Exchange Server. Patches were released earlier this month, but not after months of active exploitation by a number of threat actors. Volexity and Microsoft report that a group known as "Hafnium" (allegedly affiliated with the Chinese government) were behind a number of the attacks starting as early as the beginning of January 2021.
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