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Hackers Use Compromised ConnectWise Credential to Sign In to 173 Microsoft 365 Tenants - The Hacker News

Reported by The Hacker News | October 17, 2026, 6:16 am

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Attackers used a compromised ConnectWise Cloud Backup credential for unauthorized sign-ins across 173 Microsoft 365 tenants.

Cybersecurity researchers are sounding the alarm related to an active campaign in which unknown threat actors are abusing a compromised Microsoft 365 (M365) credential belonging to ConnectWise Cloud …

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