🔐 A privacy requirement has to hold no matter which path data takes. Historically that…
This is a dev post classified by AGK Intelligence as Security (a tool drop), kept by the Dev Radar because it carries real work, not commentary.
🔐 A privacy requirement has to hold no matter which path data takes. Historically that meant implementing the same enforcement logic separately inside every system — months of work per requirement. PrivacyLib is a common library running inside the clients of hundreds of Meta's data and processing systems. Each integration maps its native APIs onto five shared operations — read, write, RPC, request entry, and inline execution — and modules are written against those rather than any system's API. Requirements compile at build time into their simplest evaluable form, and per-request and per-host
Posted by Engineering at Meta (218.8k followers) 3 days ago · 64 likes · 6.1k views · view the original post on X. Kept by the Dev Radar as Security.
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