Overwriting (also known as zeroing) is a data sanitization method where existing data is replaced with zeroes, random patterns, or other data to make it unrecoverable. This ensures that sensitive information is removed before repurposing or disposing of storage media.
Why Not the Others?
B. Nullification → Not a standard term in data sanitization.
C. Blanking → This term is sometimes used interchangeably with clearing, but zeroing specifically refers to overwriting with zeroes.
D. Deleting → Simply removes file pointers but does not actually erase the data, making it recoverable with forensic tools.
A. Overwriting
Overwriting involves replacing existing data on a storage medium with a pattern of data, typically zeros, to prevent recovery of the original data. This process is often called "zeroing" because it frequently involves writing zeros over the data to ensure it is securely erased.
Not sure how it is Overwriting:
Overwriting: Writing random data over the actual data. The more times the
overwriting process occurs, the more thorough the destruction of the data is
considered to be.
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