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I have most of my Signal contacts also belong to a group on Signal. When I see the message for a contact’s verification number changing, I ask the contact in th
by tareqak 6y ago
I have most of my Signal contacts also belong to a group on Signal. When I see the message for a contact’s verification number changing, I ask the contact in the Signal group if they got a new phone.
- codethief 6y agoWhat prevents an attacker (who obtained access to your contact's phone number or is acting as a MITM) to forge a message (pretending to be your contact) in that Signal group, saying that yes, "he" indeed got a new phone? Or are you hoping that the attacker is only attacking your personal conversation with your contact, not your contact's other conversations?
- tareqak 6y agoI know it's not sufficiently secure. For me, it's about educating other Signal users about the significance of the message that pops up. Almost all of the people on my Signal contact list use Signal because I asked them to do so.