A Hacker Found The BitLocker Backdoor

Summary of the video’s main points

• BitLocker and other Microsoft security components are being targeted by researcher-published exploits. The video argues that, despite BitLocker’s role in full disk encryption, a security researcher claims to have found serious weaknesses—possibly even “backdoor-like” functionality—used to access encrypted data.

• The claims revolve around a researcher known as “Chaotic Eclipse.” The video reports that this researcher posted multiple Windows vulnerabilities and related proof-of-concept/code on GitHub.

Why public release is unusual

The video explains that responsible disclosure typically involves:

1. Privately notifying the vendor
2. Receiving a bug bounty
3. Waiting for patches before publishing details/POCs

It claims the researcher felt Microsoft did not “hold up their end of the bargain” (e.g., no bounty, inadequate response), and therefore chose to release exploit code publicly.

Unusual “Defender to privilege escalation” chain (RedSun and BlueHammer)

BlueHammer

The video describes BlueHammer as targeting Microsoft Defender’s signature update process, chaining legitimate Windows features (such as VSS, Cloud Files API, and opportunistic locks) to trigger a TOCTOU race condition. The claims include:

• No kernel exploits and no admin privileges required
• If successful, it can:
  • Leak the SAM database via a VSS snapshot
  • Extract NTLM password hashes
  • Take over a local administrator account
  • Spawn a system-level shell
  • Restore original hashes to reduce detection

RedSun

The video describes RedSun as exploiting a logic flaw in Defender’s file remediation/restore path. The claim is that a standard user can redirect Defender’s restore operation into system32 using junction-point-style path manipulation.

Additional claimed escalation: “YellowKey” BitLocker bypass (scariest claim)

• YellowKey is presented as a zero-day bypass against BitLocker on Windows 11 and Windows Server 2022/2025.
• It reportedly abuses a debugging feature in the Windows recovery environment:
  • Forces recovery to unlock the drive for testing
  • Then interrupts execution to keep the drive unlocked
• The video emphasizes lack of documentation as evidence the researcher believes it could be a backdoor.
• It also notes the practical limitation that a BitLocker bypass would require physical access to the device.

“Multiple exploits in the wild” claim

• The video states that some exploit tools are actively being used, citing reporting by Huntress.
• It also references another exploit (“green plasma”), where the author claims the release may not be a full turnkey PoC and might require tweaks to get a shell.

Patch status mentioned

• BlueHammer is said to have been patched by Microsoft on April 14, 2026.
• The researcher is also claimed to have stated:
  • RedSun was silently patched (no CVE/disclosure details mentioned)
• The video says there appear to be no current fixes for Green Plasma and YellowKey.

Overall security lesson emphasized

The video argues that:

The public nature and pattern of these issues suggest serious problems in relying on closed/proprietary, critical security tooling like BitLocker.

It explicitly recommends considering open-source encryption like LUKS instead, and ends with practical caution: be wary of downloaded/executed files, since these types of local escalation paths usually follow some initial compromise (e.g., remote code execution).

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Presenters / contributors (named in the subtitles)

• Chaotic Eclipse — security researcher; main source of the claims
• Huntress — cybersecurity company mentioned as reporting exploitation in the wild
• Microsoft Security Response Center — Microsoft internal unit mentioned as responsible for bug bounty handling