PEPR '25: 2025 USENIX Conference on Privacy Engineering Practice and Respect

Daniel Gagne, Meta


This talk goes into detail about the data classification processes at Meta, where we assign metadata about the semantics, actor, and other attributes of the data. We start by defining a taxonomy to support categorization based on the nature of data and regulatory requirements which will be used to ensure appropriate data usage. This supports a wide variety of privacy policies such as access control, deletion, and purpose limitation. We then take a bytes up approach to scan data, extract features, and infer labels from the taxonomy. We also detail challenges with different data storage patterns, classification approaches and quality measurement.

Additional Author: Giuseppe M. Mazzeo


https://www.usenix.org/conference/pepr25/presentation/gagne