You're describing a situation where the recording ought not to be admissible anyways. If you can't trust where evidence came from, it's not evidence. Again, na

You're describing a situation where the recording ought not to be admissible anyways. If you can't trust where evidence came from, it's not evidence. Again, nation states have always been able to doctor video of adversarial political candidates. Lookup pictures where the KGB made someone disappear. Yes, if an attacker can compromise any device they can produce a signed forgery. But that's a really big if. There are a lot of potential attackers who can't compromise any and all devices, and signatures protect against them.