ConnectWise Probes Unauthorized Access to Microsoft 365 Backup App
Global – October 17, 2026 -- ConnectWise is investigating attempted unauthorized access to its Cloud Backup for Microsoft 365 service, formerly SkyKick Cloud Backup, after disclosing the incident on October 16. The company says containment measures are in place and it has no indication that partner backup data was accessed. The investigation is ongoing.
Community reports allege attacker used the backup app's Entra credentials
Separate reports in the MSP community describe an attacker using the backup service's Microsoft Entra application to enter customer tenants and exfiltrate email, SharePoint and Teams data. ConnectWise has not confirmed these reports.
ConnectWise published indicators tied to the suspicious authentication activity: source IP 144.172.64.128 and the user agents Python-urllib/3.12 and python-requests/2.31. The company notes that their presence alone does not confirm compromise.