Hackers Use Compromised ConnectWise Credential to Sign In to 173 Microsoft 365 Tenants

The Hacker News · Saturday, 17 October 2026 at 06:16 (2h ago) · Original article ↗

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 Backup (formerly SkyKick) to gain unauthorized access to customers' M365 environments.

ConnectWise Cloud Backup is a cloud-based backup and recovery service built for managed service providers (MSPs

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