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Isn't that how Signal works too? What else would it do, disallow you from continuing the chat if the key changes?

• acct1771 8y ago
  Until reverification? Sure.
  • ubercow13 8y ago
    In that case most users similarly won't know what reverification means and will just click through without verifying anything. It's not reasonable to say that that makes Whatsapp only as secure as Twitter DMs.