All this talk about using internet techniques like proxies, etc to avoid online detection is delusional.
The 7 layer OSI model used by the telcos provides 7 ways to see into what you are doing.
Of course to gain that level of access you would need some kind of authority, but then again you could have a friend who works in the telco industry who could trowel through the logs for a small favour. Seen it all. I even reckon I could even get a bunch of notorious bikers and local mafia off the hook from the subtle corruption that goes on in telco land with this spyware.