I was just advised that someone is spying on my cell phone by using some technology. My belief is that T-Mobile is a digital network and not susceptible to eavesdropping like what happened with scanners and analog cellphones in the 90s - but I've seen some stuff on the internet that makes me wonder if I am mistaken.
1) Is there technology out there to listen in on my cell phone calls or sms messages?
2) What technology could do that?
3) Is there a way for me to know whether I am the target of such spying activities?
4) Is there a way to protect myself and prevent such spying?