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A new AI tool from Google DeepMind proves key Signal safeguards
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A new AI tool from Google DeepMind proves key Signal safeguards

Google DeepMind researchers used their AlphaProof Code framework to formally verify several important cryptographic guarantees in the Signal protocol, completing the proof of concept in just four weeks. The work offers independent reassurance about technology used by Signal, Google Messages, and WhatsApp, while showing how AI agents can speed up mathematical checks of software. The analysis found no new vulnerabilities in the parts examined, and correctly flagged known flaws in older Signal versions, but it did not verify the entire app. DeepMind has shared its specification and proof, while making AI-assisted verification practical and affordable at a much larger scale remains the next challenge.
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