ConnectWise Cloud Backup Breach Affects 173 Microsoft 365 Tenants

ConnectWise has provided an update on an ongoing security incident involving unauthorized access to application identities associated with its Cloud Backup service (formerly SkyKick Backup). The breach has affected 173 Microsoft 365 partner and customer tenants, with attackers using compromised API credentials to sign in without requiring passwords or MFA. The service remains suspended as investigation and remediation continue.