Which of the following best describes data remanence?
The practice of moving infrequently accessed data to lower-cost storage tiers
The residual representation of data that remains on storage media after attempts have been made to remove it
The duration data must be kept to satisfy regulatory requirements
A data backup strategy that preserves multiple versions of files over time
Data remanence refers to the residual representation of digital data that remains even after attempts have been made to remove or erase the data. This happens because standard deletion methods often just remove pointers to data rather than the data itself, making it possible to recover supposedly deleted information. Organizations must address data remanence when decommissioning systems or disposing of media to prevent unauthorized recovery of sensitive information. Proper data destruction techniques like degaussing, physical destruction, or cryptographic erasure are used to mitigate data remanence risks.
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