🧷
Linkability
Privacy
Degree to which two or more items (events, records) can be associated with the same subject.
Definition
Linkability measures whether an observer can correlate records to the same individual across time or contexts. Stable identifiers (device IDs, cookies) and shared metadata increase linkability.
In plain English
Degree to which two or more items (events, records) can be associated with the same subject.
Why this matters
Why it matters: Linkability enables cross-service profiling and re-identification from “anonymous” data.
Example
Example: Reduce linkability by rotating identifiers, partitioning storage, and limiting metadata exposure.