You need bacteria in your gut to produce vitamin K, this takes a while. You can administer vitamin K orally and everything will usually be fine. The issue arises in rare cases where the bile duct hasn’t developed properly. There are other signs but one of them is vitamin K not absorbing properly since it’s fat soluble and you need bile to absorb fat. Administering vitamin K as a shot circumvents the gut and prevents children with these rare conditions from bleeding to death before the issue is detected.

Somebody on twitter “reverse engineered” the exploit. Apparently ms shipped debug code in production. At least it’s not called Backdoor_FBI outright.

How it works:

1. Recovery tools look for a config file called RecoverySimulation.ini on the OS drive
2. If Active=Yes, it enables “test mode” for the recovery tools
3. Test mode unlocks your BitLocker drive but a flag called FailRelock tells it to skip relocking
4. cmd.exe spawns with full access to your “encrypted” drive

Apparently they are amazing aides for the visually impaired.

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