Your company decides to retreat a branch from a foreign country and sanitize data stored in hard drives so that the media cannot be reused. Which of the following sanitization methods is the most effective? (Wentz QOTD)
A. Single-pass overwrite all sectors on a hard drive
B. Clear the master boot record (MBR) of the hard drive
C. Destroy the key used to encrypt the whole drive
D. Eliminate the remnant magnetic field of the hard drive
Kindly be reminded that the suggested answer is for your reference only. It doesn’t matter whether you have the right or wrong answer. What really matters is your reasoning process and justifications.
My suggested answer is D. Eliminate the remnant magnetic field of the hard drive.
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According to NIST SP 800-88 R1, there are three major sanitization methods: clear, purge, and destroy. As your company requires that data shall be sanitized and the media cannot be reused, “destroy” is the most effective. The media can be reused if clear or purge is conducted.
Degaussing, a destructive method, means eliminating the remnant magnetic field of the hard drive; it destructs data and renders the media unusable. When degaussing magnetic tapes, some types of types can be reused; however, tapes that have metadata on them can’t after degaussing.
您的公司決定從國外撤出分支機構並清理存儲在硬盤驅動器中的數據，以便介質無法重複使用。 以下哪種消毒方法最有效？(Wentz QOTD)