Which term describes data elements that, when combined with other information, are used to single...

Indirect identifiersare pieces of information that may not identify an individual on their own but, when combined with other data, can uniquely identify someone. Examples include birthdate, ZIP code, or gender. Together, these can re-identify a person, even when names or direct identifiers are removed.

Direct identifiers (such as Social Security numbers) uniquely identify an individual alone. Data subjects are the individuals to whom the data refers, while personal details is too broad and not a formal term.

Understanding indirect identifiers is essential in privacy regulations like GDPR and HIPAA, where pseudonymization or anonymization must account for potential re-identification risks. Safeguarding indirect identifiers reduces the chance of privacy violations and unauthorized profiling.