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CISSP study material · question 160 of 500

An operator degausses a batch of solid-state drives and records them as purged. Why is that record wrong?

  1. Degaussing is a clear technique and cannot be recorded as a purge.
  2. Degaussing solid-state media requires two passes to qualify as a purge.
  3. Degaussing purges the controller but not the NAND array.
  4. Flash storage holds no magnetic domains for the field to disturb, so degaussing achieves nothing.
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Answer: D. Flash storage holds no magnetic domains for the field to disturb, so degaussing achieves nothing.

Degaussing should not be used on non-magnetic media such as flash storage; there is nothing for the magnetic field to act on, so the data is untouched.

Source: NIST SP 800-88 Rev. 2 (NIST) — SP 800-88 Rev. 2 > 3.1.2 Purge Sanitization Method

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