How many times have you been locked out of your PC because you accidentally spammed the wrong PIN or exceeded the max number of sign-in ... until the BitLocker Recovery screen is activated.
As BitLocker requires Secure Boot, Lambertz also had to start the Linux used for the exploit with Secure Boot. Lambertz emphasized that Microsoft has been aware of the problem for a long time.
Facepalm: BitLocker is a full volume encryption feature ... Lambertz was able to "repurpose" the bitpixie bug using the controversial Secure Boot technology to load an outdated Windows bootloader.