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Suggested Answer:D🗳️
Deletion merely removes the pointers to data on a system; it does nothing to actually remove and sanitize the data. As such, the data remains in a recoverable state, and more secure methods are needed to ensure it has been destroyed and is not recoverable by another party.
Chapter 3: Data Classification (CCSP Official Study Guide)
Method 1: Physical Destruction of Media and Hardware
Any hardware or portable media containing the data in question can be destroyed by burning, melting, impact (beating, drilling,
grinding, and so forth), or industrial shredding. This is the preferred method of sanitization, since the data is physically unrecoverable.
Method 2:Degaussing
This involves applying strong magnetic fields to the hardware and media where
the data resides, effectively making them blank. It does not work with solid-state drives.
Method 3:Overwriting
Multiple passes of random characters are written to the storage areas (particular disk sectors) where the data resides, with a final pass of all zeroes or ones. This can
be extremely time-consuming for large storage areas.
Method 4:Cryptoshredding (AKA Cryptographic Erasure)
This involves encrypting the data with
a strong encryption engine, and then taking the keys generated in that process, encrypting
them with a different encryption engine, and destroying the keys.
The only INCORRECT answer is A.
Either the question is incorrect or there should be multiple answers. Because B,C & D are correct in a Cloud environment.
Nope. In cloud environments, usually you dont have ways to overwrite the information at physical level, so the best way is to use cryptographic erasure. And the worst is just trusting the Deletion features, because it does not actually delete the information; only the pointers to it.
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