[modriano]

For the threat profile of top leadership of the US government, yes, Signal is not secure. Signal runs on phones and phones can be compromised or lost, which can grant non-authorized individuals the ability to read the messages.

Spyware like Pegasus [0] has been able to use zero-click exploits to penetrate target phones and read messages as though they were the phone's owner.

The US has the best SigInt capacity in the world. The leaders of the US government know that phones are not secure against sophisticated adversaries and they know that we have very sophisticated adversaries. It's deeply troubling that so many of our leaders were so comfortable discussing Secret level plans in such a reckless and illegal way, and it's extremely likely that hostile adversaries have fly-on-the-wall level access to extremely sensitive US planning.

[0] https://en.wikipedia.org/wiki/Pegasus_(spyware)

[JadeNB]

> The US has the best SigInt capacity in the world.

How can anyone, including the top SigInt people in the US, know that? It has surely always been part of the principles of good spycraft that, if you've got fantastic SigInt (or other -Int) capabilities, then the best way to take advantage of them might be to make sure that nobody else knows about them.