When a company encrypts all data stored on disk so that it remains unreadable even if physical media are lost or stolen, which core security principle of the cloud's confidentiality‐integrity‐availability (CIA) model is the company primarily enforcing?
Availability
Integrity
Compliance
Confidentiality
Encrypting data at rest protects against unauthorized disclosure if storage devices are accessed by an attacker. This control focuses on keeping the content secret, which maps directly to confidentiality. It does not directly validate that data is unaltered (integrity), ensure systems remain operational (availability), or demonstrate adherence to a regulation (compliance).
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