Zero-day exploit completely defeats default Windows 11 BitLocker protections

YellowKey is a published zero-day exploit that enables an attacker with physical access to a Windows 11 system to bypass BitLocker full-disk encryption within seconds by copying a custom FsTx folder to a USB drive and entering Windows Recovery; the exploit appears to leverage Transactional NTFS (fstx.dll) behavior and has been independently confirmed by multiple researchers.