L-Diversity
Noun · Security & Infosec
Definitions
A privacy model that extends k-anonymity by requiring each anonymized group to contain at least l well-represented values for sensitive attributes, reducing the risk of attribute disclosure. It was proposed because a dataset can satisfy k-anonymity while still revealing too much if each group shares the same sensitive value.
In plain English: A privacy rule that makes anonymized groups contain enough variety in sensitive data to reduce inference risk.
Example: "The publisher added l-diversity checks after realizing the anonymized groups still exposed likely diagnoses despite meeting k-anonymity."