The post-compromise technique abuses Windows Recovery Environment to create persistent access to BitLocker-encrypted data, with no patch currently available. According to the Cyderes Howler Cell team, a newly disclosed Windows zero-day called GreatXML can turn Microsoft Defender’s offline scanning process into a pathway for accessing BitLocker-encrypted data without a recovery key or user credentials. The technique targets the interaction between Windows Recovery Environment, known as WinRE,...