During the study of internal architecture of Intel Management Engine (ME) 11, Positive Technologies experts discovered an undocumented mode that allows to partially disable the functionality of the technology. Experts remind that Intel ME has access to almost all data on the computer and the ability to execute third-party code allows to completely compromise the platform.
In their blog researchers describe how they discovered undocumented mode and how it is connected with High Assurance Platform (HAP) program.