This was posted yesterday on a similar story. It really comes down to detecting cases where the IMSIcatcher operates differently than the normal towers. But a l

This was posted yesterday on a similar story. It really comes down to detecting cases where the IMSIcatcher operates differently than the normal towers. But a lot of those are lost in the noise of different carriers. One of the stronger signals is a forced downgrade to GSM, with no encryption. http://www.sba-research.org/wp-content/uploads/publications/AdrianDabrowski-IMSI-Catcher-Catcher-ACSAC2014-preprint-20140820.pdf http://www.sba-research.org/wp-content/uploads/publications/...