<ul><li>Meta has developed a privacy-preserving AI feature called Private Processing, using Trusted Execution Environment (TEE), Remote Attestation with TLS (RA-TLS), and OHTTP to ensure data security and privacy.</li><li>Private Processing leverages TEE, such as Intel SGX or ARM TrustZone, for decryption inside a secure enclave, ensuring data remains protected even if the server or operating system is compromised.</li><li>RA-TLS allows user devices to verify enclave integrity before data transmission, while OHTTP secures the transport layer, making requests anonymous to the processor.</li><li>WhatsApp's approach involves processing data without storing it, enabling compliance, auditability, and user opt-in for enhanced privacy, with Meta committing to transparency and external audits.</li></ul>

How WhatsApp Built Privacy-Preserving AI (and How You Can Too)

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