From the article -
“At the RSA Conference last week, Pwnie Express demonstrated their IMSI-catcher detector.
Building your own IMSI-catcher isn’t hard or expensive. At Def Con in 2010, researcher Chris Paget demonstrated his homemade IMSI-catcher. The whole thing cost $1,500, which is cheap enough for both criminals and nosy hobbyists.
It’s even cheaper and easier now. Anyone with a HackRF software-defined radio card can turn their laptop into an amateur IMSI-catcher. And this is why companies are building detectors into their security monitoring equipment.”
I used to have the radios before all that became illegal. The problem is when you get caught. I’m just saying what LE and Feds are doing is against the law and they are hiding it.
It is the reason the FBI forces some local LEs to drop cases when the technology and methodology were called into the daylight. IOW, in my opinion they are ridin’ dirty against the Constitution and US public law. A blanket warrant for all that interception of targeted and non targeted traffic isn’t probable cause in my book. No way.