Explore a comprehensive security research presentation that reveals critical vulnerabilities in Windows BitLocker encryption through the Windows Recovery Environment (WinRE). Discover how researchers identified multiple zero-day vulnerabilities in WinRE that can be exploited to bypass BitLocker's full volume encryption and extract protected data from physically accessible devices. Learn about the WinRE architecture, understand the attack surfaces introduced when BitLocker recovery features were implemented, and examine the methodology used to research and exploit these security weaknesses. Gain insights into the development of functional exploits that demonstrate several different methods for circumventing BitLocker protection, and understand Microsoft's response to these findings including their approach to hardening WinRE to strengthen BitLocker's overall security posture.