I’ve had problems with the security practices (or lack thereof) by T-Mobile in the past. They might have learned something from the ridiculous hack that happened to them a few years ago. They seem to be the only major carrier in our mobile oligopoly that apparently wasn’t compromised by China in their recent assault on US telecoms infrastructure.
They had to be forced by court order to improve their security so I’m not going to give T-Mobile too much credit but at least the money seems to have been well spent. Maybe some other critical industries need a nudge in that direction?