Term Kind Topic What it is
Differential Privacy Budget concept Privacy-Enhancing Technologies The cumulative privacy loss permitted across all queries against a dataset, which must be tracked and exhausted rather than applied per query.
Privacy Enhancing Technology PETs concept Privacy-Enhancing Technologies Techniques that allow useful computation over data without exposing the underlying records — differential privacy, secure multi-party computation, homomorphic encryption, federated learning.
Privacy Loss Accounting Budget Composition Tracking, Epsilon Accounting practice Privacy-Enhancing Technologies Tracking cumulative privacy loss across every statistic released from a dataset, because differential privacy's guarantee holds over the whole publication rather than per query - and once the budget is spent, …
Private Set Intersection PSI, Private Join and Compute protocol Privacy-Enhancing Technologies A cryptographic protocol that lets two parties learn the size of - or an aggregate over - the overlap between their datasets without either learning the other's non-matching members.
Secure Aggregation Private Aggregation, Cohort-Level Aggregation protocol Privacy-Enhancing Technologies A cryptographic protocol that lets a server learn only the sum of many clients' model updates and never any single client's update, which is what makes an on-device training claim survive scrutiny.