# Google DeepMind just mathematically verified key parts of Signal

- URL: https://talkfuse.com/story/google-deepmind-just-mathematically-verified-key-parts-of-signal/
- Published: 2026-11-11T14:08:57+00:00
- Updated: 2026-11-11T14:48:44+00:00
- Original publisher: Ars Technica
- Original article: https://arstechnica.com/ai/2026/11/signals-encryption-just-passed-an-ai-powered-mathematical-checkup/
- Topics: AI, Technology

## Key points

- DeepMind verified parts of Signal’s cryptographic protocol in four weeks.
- The analysis found no new flaws in the sections examined.
- Whether AI verification can scale affordably remains uncertain.

## Summary

Google DeepMind used its AlphaProof Code AI framework to mathematically verify several cryptographic guarantees in the Signal protocol. The four-week project offers additional assurance about technology protecting communications on Signal, Google Messages and WhatsApp, while demonstrating how AI could make formal verification faster and more practical.

The work found no new vulnerabilities in the protocol sections examined, but correctly flagged known flaws in older Signal versions. It did not verify the entire app, and researchers say scaling the method to large codebases remains a challenge. DeepMind is releasing its specification and proof; the project was free, though Google did not disclose its cost or plans for a commercial service.

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