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State whether the following is true or false.
Encryption at rest protects data against an attacker who has valid credentials to the service.

  • A.False only at small scales
  • B.True
  • C.False
  • D.True only at large scales

Answer: C

It protects against theft of the physical medium or of the raw stored blocks. A caller with valid credentials receives the data decrypted, which is why identity controls and encryption solve genuinely different problems and are both required.

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