➀ A Windows user lost access to 3TB of backup data after BitLocker auto-enabled during a system reset, despite no prior activation.

➁ Microsoft's default BitLocker encryption on Windows 11 (with Microsoft account sign-in) triggered irreversible drive locking, leaving recovery tools ineffective due to AES-256 security.

➂ The incident highlights risks of corporate-mandated security measures and underscores the need for manual encryption checks and key backups.