Data Pseudonymization
The processing of personal data so that it can no longer be attributed to a specific individual without additional information, which is kept separately and securely.
In plain language
Replacing identifying information with fake IDs, but keeping a secret key that can link them back if needed. Like assigning everyone a random number; more useful than full anonymisation, but not as private.
Why this matters
Pseudonymisation is recognised under the Australian Privacy Act and other frameworks as a valid data protection measure. Your AI governance framework should define when pseudonymisation is appropriate, what safeguards protect the linking keys and how long keys are retained.
Relevance
GovernancePseudonymisation provides a structured approach to data protection that balances privacy with data utility, reducing compliance burden whilst maintaining analytical value.
Related terms
Putting data pseudonymization into practice in your organisation?
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