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In anonymization (or encryption) techniques, maintaining the security of the data depends on keeping the key (or the method for re-identification) separate from the data it protects. If the key is compromised or accessible with the data, the anonymization or encryption can be reversed, exposing the personal data.
A. The key must be kept separate and distinct from the data it protects.
A. The key must be kept separate and distinct from the data it protects.