When Backups Open Backdoors: We discovered a leaked credential that allowed anyone unauthorized access to all Microsoft tenants of organizations that use Synology's "Active Backup for Microsoft 365" (ABM), including sensitive data such as all Teams channel messages. #synology #disclosure #modzero #writeup
https://modzero.com/en/blog/when-backups-open-backdoors-synology-active-backup-m365/