Is encrypting backup for added security necessary and why or why not?
First, there are arguments both ways. It is important to secure backup since this data is stored in a location where the company may not feel secure and the data may be exposed to theft. The downside is the overhead due to encryption and the challenge of key management since keys may need to be stored for years. So the answer is it depends! It depends on the type of data being backed up and the associated risks and costs.
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This was first published in October 2002