ConnectWise Suspends Cloud Backup After Attackers Compromise Microsoft 365 Tenants
Attackers hijacked ConnectWise Cloud Backup application identities to breach customer M365 tenants — a supply-chain vector that should prompt immediate OAuth grant audits across European organisations using managed backup services.
Summary written by editorial AI · Source link below
ConnectWise on Saturday said it has disabled seven ConnectWise application identities as it continues its investigation into an incident in which unknown threat actors obtained unauthorized access to the application identities and compromised Microsoft 365 tenants.
The disabled identities are listed below -
ConnectWise Cloud Backup - 506e08f9-6e9a-4da4-942b-a099a03644ae ConnectWise
Editorial Analysis
Third-party application identities are a growing supply-chain attack surface; a single compromised managed-service provider can expose hundreds of downstream M365 tenants to data theft.
Immediately audit OAuth application grants and service principals in all M365 tenants for ConnectWise-related identities and remove any that are unnecessary.
A managed-backup vendor breach gave attackers direct access to customer Microsoft 365 environments, underscoring third-party cloud-identity risk.
Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.
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