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Threat actors affiliated with a ransomware strain known as Play are leveraging a never-before-seen exploit chain that bypasses blocking rules for ProxyNotShell flaws in Microsoft Exchange Server to achieve remote code execution (RCE) through Outlook Web Access (OWA)

More from The Hacker News 21 Dec 2022, 8:41 p.m. Bypass Crowdstrike Exchange Server Exploit Flaw Microsoft Mitigation Ransomware Remote Code Execution Research Threat Actor