[tmosleyIII]

There are agreements in place

[chmars]

Do you have a source for that? Basically, IMSI catching does not require any cooperation with telcos. On the other hand, it is easy to imagine that some telcos might betray their customers – especially under the cover of secrecy.

[tmosleyIII]

There are sources available that can be found with some digging. I'm just speaking on the stuff that relates to the work I do.