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Building Private Processing for AI tools on WhatsApp
- WhatsApp is developing Private Processing, a technology that lets users leverage AI in a privacy-preserving way.
- Private Processing ensures that no one, including Meta and WhatsApp, can access messages being processed.
- The technology will initially support features like summarizing messages and providing writing suggestions.
- Private Processing is built on a Trusted Execution Environment, ensuring user data remains confidential.
- Security principles like optionality, transparency, and user control are at the core of Private Processing.
- Threat modeling and continuous security validation are essential parts of the development of Private Processing.
- Private Processing involves steps like authentication, third-party routing, and application session establishment for secure processing.
- The system aims to safeguard against threats such as insider attacks, compromised components, and targeted compromises.
- Private Processing emphasizes data minimization, stateless processing, and enforceable security guarantees.
- To ensure transparency and provide verification mechanisms, WhatsApp plans to publish technical details and engage security researchers.
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