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Question 988 - CISA discussion

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When physical destruction IS not practical, which of the following is the MOST effective means of disposing of sensitive data on a hard disk?

A.
Overwriting multiple times
Answers
A.
Overwriting multiple times
B.
Encrypting the disk
Answers
B.
Encrypting the disk
C.
Reformatting
Answers
C.
Reformatting
D.
Deleting files sequentially
Answers
D.
Deleting files sequentially
Suggested answer: A

Explanation:

The correct answer is A. Overwriting multiple times.Overwriting is a method of securely erasing data from a hard disk by replacing the existing data with random or meaningless data, making it difficult or impossible to recover the original data1.Overwriting multiple times, also known as multiple-pass overwriting, is a more effective way of disposing of sensitive data than overwriting once, as it reduces the possibility of residual traces of data that could be recovered by advanced techniques2.Overwriting multiple times can be done by using specialized software tools that follow certain standards or algorithms, such as the US Department of Defense's DoD 5220.22-M or the Gutmann method3.

asked 18/09/2024
Avion Bryant
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