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The "Transparent operation mode" and "User authentication mode" of BitLocker use TPM hardware to detect whether there are unauthorized changes to the pre-boot environment, including the BIOS and MBR. If any unauthorized changes are detected, BitLocker requests a recovery key on a USB device.
A common purpose of cold boot attacks is to circumvent software-based disk encryption. Cold boot attacks when used in conjunction with key finding attacks have been demonstrated to be an effective means of circumventing full disk encryption schemes of various vendors and operating systems, even where a Trusted Platform Module (TPM) secure cryptoprocessor is used.
In case of physical access, computers with TPM 1.2 are vulnerable to cold boot attacks as long as the system is on or can be booted without a passphrase from shutdown, sleep or hibernation, which is the default setup for Windows computers with BitLocker full disk encryption. [66]
Challenge–response password recovery mechanism allows the password to be recovered in a secure manner. It is offered by a limited number of disk encryption solutions. Some benefits of challenge–response password recovery: No need for the user to carry a disc with recovery encryption key. No secret data is exchanged during the recovery process.
The individual sector keys are stored on disk and encrypted with a master key. (See GBDE for details) LRW: The Liskov-Rivest-Wagner tweakable narrow-block mode, a mode of operation specifically designed for disk encryption. Superseded by the more secure XTS mode due to security concerns. [122]
Modern hard drives feature an ability to recover from some read/write errors by internally remapping sectors and performing other forms of self-test and recovery. The process for this can sometimes take several seconds or (under heavy usage) minutes, during which time the drive is unresponsive.
When debugging a concurrent and distributed system of systems, a bootloop (also written boot loop or boot-loop) is a diagnostic condition of an erroneous state that occurs on computing devices; when those devices repeatedly fail to complete the booting process and restart before a boot sequence is finished, a restart might prevent a user from ...
GNU GRUB, a popular open source bootloader Windows Boot Manager. A bootloader, also spelled as boot loader [1] [2] or called bootstrap loader, is a computer program that is responsible for booting a computer and booting an operating system.