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CompTIA Security+ study material · question 186 of 611

Why is a multi-pass overwrite an unreliable way to sanitise a solid-state drive?

  1. Overwriting damages the flash controller
  2. Solid-state drives ignore write commands during sanitisation
  3. Wear levelling moves data between physical cells the host cannot directly address
  4. Solid-state drives store data in read-only memory
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Answer: C. Wear levelling moves data between physical cells the host cannot directly address

Because the host cannot reach every physical area, overwriting cannot guarantee all previous data was covered.

Source: NIST SP 800-88 Rev. 1 (NIST) — SP 800-88 Rev. 1 § 5 Sanitization Techniques

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