Forum Discussion
YellowKey BitLocker Exploit
I think the biggest problem right now is that many organizations rely heavily on TPM-only BitLocker deployments because they are easy to scale with Intune and Entra ID, but YellowKey seems to expose the weakness of relying only on transparent unlock mechanisms when physical access is possible.
From what I understand so far, Microsoft’s mitigation script mainly reduces the current attack surface, but it does not completely replace stronger protections like TPM+PIN. For high risk environments, adding pre-boot authentication still seems like the safest long term approach, even if deployment across existing fleets is painful.
Disabling WinRE temporarily also makes sense as an emergency mitigation until Microsoft provides a cleaner permanent fix. I also agree with others here that USB restrictions and BIOS passwords alone are not enough on many modern devices.
For Intune environments, a remediation script checking WinRE status and mitigation compliance sounds like the most scalable approach right now. Surprised Microsoft did not publish an official Intune remediation package already.
I was actually reading through a few security and infrastructure discussions while testing monitoring setups on one of my own utility projects recently:
https://peptixcalc.com/
Curious to see whether Microsoft eventually pushes an automatic mitigation through Defender or BitLocker policy updates.