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How Trail of Bits helps verify the integrity of your Signal chats

medtrailofbitsPublished 2026-08-11

<p>Every Signal chat starts the same way: the client asks the Signal server for the public key associated with your contact’s phone number. But how do you know the server gave you the right key? A compromised server could provide a false public key, allowing the client to encrypt messages to an attacker rather than the intended recipient.</p> <p>Until now, the only way to detect such malfeasance w

Indicators of compromise

Original source: https://blog.trailofbits.com/2026/08/11/how-trail-of-bits-helps-verify-the-integrity-of-your-signal-chats/