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On October 28, 2026, Meta's engineering team released PrivacyLib, a general-purpose privacy library that runs inside the clients of hundreds of data and processing systems and performs billions of checks per second. The library only needs to be integrated once, and new privacy requirements can reuse that integration as modules, eliminating the need to reimplement them in each system. In addition, the newly added Agent Observability module can observe data access events of internal AI agents, and systems that have already integrated the library can enable it without additional modifications.
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PrivacyLib: Meta implements privacy controls at the data access boundaryDevelopments
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- Source:Meta Engineering Blog
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Oct 28
Meta Engineering BlogFirst-party
PrivacyLib: Meta implements privacy controls at the data access boundary
The Meta engineering team has introduced PrivacyLib, a general-purpose privacy library that runs within clients across hundreds of data and processing systems and performs billions of checks per second. A system only needs to integrate it once, and new privacy requirements can reuse that integration as modules, without the need to reimplement them in each system. The newly added Agent Observability module can observe data access events of internal AI agents, and systems that have already integrated it can enable it without additional modifications.