Which of the following data destruction methods is the MOST effective and efficient?

Question

Options

• ACrypto-shredding
• BDegaussing
• CMulti-pass wipes
• DPhysical destruction

• A
  2% (1)
• B
  91% (42)
• C
  4% (2)
• D
  2% (1)

Explanation

Degaussing exposes magnetic storage media to a powerful magnetic field that randomizes the magnetic domains, rendering stored data permanently unrecoverable. It is considered highly effective and efficient for magnetic media (HDDs, backup tapes) because it is fast and thorough. Physical destruction (D) is thorough but operationally inefficient at scale. Multi-pass wipes (C) are time-consuming and may not be suitable for all media types. Note: In cloud-specific contexts, crypto-shredding (A) is often preferred because physical access to cloud storage is not possible - destroying the encryption keys renders data unrecoverable without physical destruction. However, for traditional/on-premise magnetic storage, degaussing is the most effective and efficient method.

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