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CompTIA

220-802 · Question #827

Which of the following drive destruction methods is considered the MOST secure when dealing with highly sensitive data?

The correct answer is D. Shredding. Physical shredding is the most secure data destruction method because it renders the storage media completely unreadable and unrecoverable by destroying it into small fragments.

Hardware

Question

Which of the following drive destruction methods is considered the MOST secure when dealing with highly sensitive data?

Options

  • ADegaussing
  • BWiping
  • CMagnetizing
  • DShredding

How the community answered

(31 responses)
  • A
    3% (1)
  • B
    6% (2)
  • C
    13% (4)
  • D
    77% (24)

Why each option

Physical shredding is the most secure data destruction method because it renders the storage media completely unreadable and unrecoverable by destroying it into small fragments.

ADegaussing

Degaussing exposes magnetic media to a strong magnetic field and is effective for HDDs and tapes, but is completely ineffective on SSDs and flash-based storage that use no magnetic encoding.

BWiping

Wiping overwrites data with zeros or random patterns, but sophisticated forensic techniques may recover residual data, and it may not fully sanitize all sectors on worn SSDs.

CMagnetizing

Magnetizing is not a recognized or standard data destruction method and would not reliably destroy data on any media type.

DShreddingCorrect

Shredding physically pulverizes the drive platters or flash chips into particles small enough that no data can be extracted, even with forensic laboratory equipment. It is effective against all storage types including SSDs, HDDs, and flash media. For highly sensitive data, physical destruction is the only method guaranteed to prevent any form of recovery.

Concept tested: Secure physical data destruction methods for sensitive media

Source: https://csrc.nist.gov/publications/detail/sp/800-88/rev-1/final

Topics

#drive destruction#data sanitization#physical security#shredding

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