Pseudonymization
An approach that replaces direct identifiers with substitute representations that can be re-linked only through controlled additional information.
Pseudonymization does not make personal data fully anonymous, but it significantly reduces privacy risk by separating direct identifiers. Replacing a customer’s name with a key-based ID is a common example. The data can still be re-linked under controlled conditions, which is why it is treated differently from anonymization both legally and technically. Pseudonymization is especially useful when organizations need to balance analytical utility with privacy protection. Controlled access and key management are critical in this setup.
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