Windows 11 BitLocker Bypass: YellowKey Zero-Day

A working BitLocker bypass for Windows 11 was published this week. A USB stick and a key combo open the encrypted drive without entering a password. The exploit is called YellowKey, released on May 12th by a researcher using the alias Nightmare-Eclipse — the same person who dropped three Microsoft Defender zero-days in April. The attack copies crafted files onto a USB stick, boots the locked machine into the Windows Recovery Environment, and drops to a command prompt with full read-write access to the drive. Independent researcher Kevin Beaumont confirmed it works. The researcher also claims the flaw was deliberately planted by Microsoft and that a PIN-working variant exists; other researchers told Cybernews the backdoor claim isn't verifiable from outside, and one independent tester found a BitLocker PIN blocked the public exploit. Microsoft hasn't acknowledged the bug. Sources: https://www.bleepingcomputer.com/news/security/windows-bitlocker-zero-day-gives-access-to-protected-drives-poc-released/ https://www.tomshardware.com/tech-industry/cyber-security/microsoft-bitlocker-protected-drives-can-now-be-opened-with-just-some-files-on-a-usb-stick-yellowkey-zero-day-exploit-demonstrates-an-apparent-backdoor https://cybernews.com/security/researcher-releases-bitlocker-bypass-and-privilege-escalation-exploit/ More on cybersecurity, privacy, scams, and homelab on Hake Hardware. New shorts every weekday. #cybersecurity #bitlocker #windows11