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Assessment Title
Rule Text
Windows 10 systems must use a BitLocker PIN with a minimum length of 6 digits for pre-boot authentication.
Description
Discussion Text
If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can remove non-volatile memory and read it directly, thereby circumventing operating system controls. Encrypting the data ensures that confidentiality is protected even when the operating system is not running. Pre-boot authentication prevents unauthorized users from accessing encrypted drives. Increasing the pin length requires a greater number of guesses for an attacker.
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