Also hard to imagine how this could be used for espionage. Listening in on cell traffic requires defeating security measures in the protocol. Generally somethin

Also hard to imagine how this could be used for espionage. Listening in on cell traffic requires defeating security measures in the protocol. Generally something like a 0 day. This might require a single SIM card, but probably not lots of unless there’s something very unusual about the vulnerability that requires lots of valid seeming actors on the network. Plausible I suppose. But “SMS spam” is a vastly more likely explanation than a security hole that can’t be brute forced on the radio.