Zero-Day Exploit Defeats Windows 11 BitLocker Encryption by Default

A newly discovered zero-day vulnerability completely bypasses Windows 11's default BitLocker disk encryption protections, though the specific technical mechanism remains unclear. Microsoft has acknowledged the issue and launched an investigation into the flaw.

Why it matters: BitLocker is a critical security feature for protecting sensitive data at rest; a default bypass vulnerability could expose millions of Windows 11 users to unauthorized data access.