itwbennett writes: The main security benefit of Self-Encrypting Drives (SEDs) is that the encryption key is not stored in the OS memory, but on the disk itself, which makes it less exposed to theft. However, some attacks that work against software-based encryption products also affect SEDs, including evil maid attacks and those that bypass Windows authentication. Once a SED is unlocked, it remains in that state until the power to it is cycled or a deauthentication command is sent. When the laptop is put in sleep mode the drive state is locked, but when it resumes from sleep, the pre-boot management software, which is already loaded in memory, unlocks the drive. [A team of] researchers devised three attacks to take advantage of this situation.
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