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Transforming data to eliminate identifiability, ideally irreversibly.

Definition

Anonymization is a process that removes or alters identifiers so individuals cannot be identified, directly or indirectly, by reasonably likely means.

In plain English Transforming data to eliminate identifiability, ideally irreversibly.

Why this matters

Why it matters: When done correctly, anonymized data reduces privacy risk, but weak methods can still allow re-identification.

Example

Example: Releasing only aggregated counts with safeguards, rather than row-level user data.