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CISSP study material · question 154 of 500

A batch of drives has failed and no longer responds to the host interface. A technician proposes overwriting them before disposal. Which two objections does NIST SP 800-88 support? Choose two.

  1. Overwriting cannot reach every area where sensitive data may still be held.
  2. Overwriting cannot be applied to media damaged to the point of being inoperable.
  3. Overwriting is a destroy technique and would make the failure analysis impossible.
  4. Overwriting is prohibited for any media that once held categorised data.
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Answer: B. Overwriting cannot be applied to media damaged to the point of being inoperable.
A. Overwriting cannot reach every area where sensitive data may still be held.

Overwriting cannot be used on non-rewriteable or inoperable media and therefore cannot address all the areas where sensitive data may remain; a stronger method is needed.

Source: NIST SP 800-88 Rev. 2 (NIST) — SP 800-88 Rev. 2 > 3.1.1 Clear Sanitization Method

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