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Sidechannels in Signal is news to me. Can you provide some keywords to search for, or any links?

• jiveturkey 4y ago
  The contact discovery services leaks the fact that you are using Signal. It is not optional. It's clear why that is, so I won't spell it out.
  • growwrkr6 4y ago
    They can get download records from Google or Apple to check for Signal downloads. So there’s really no reason for Signal to try and hide one is merely using Signal. Best to focus on securing content.
    • jiveturkey 4y ago
      You are missing the attack vector here.
  • fourthark 4y ago
    It is optional isn’t it? I never gave Signal permission to read my contacts and yet I still use it.