
The crew from SecUpwN wrote in to tell us about their free and open source project to detect IMSI-Catchers and Silent SMS attacks with your Android smartphone: The Android IMSI-Catcher Detector
Starting out on XDA Developers, our small team and me has been working on an open-source security-related Android App since the end of 2013 called the “Android IMSI-Catcher Detector” (in short: AIMSICD). Our App aims to detect and avoid fake base stations (IMSI-Catchers) or other base-stations (mobile antennas) with poor/no encryption as well as Silent/Stealth SMS. Feel invited to check out our GitHub repository landing page

Thank you very much for featuring our project! Developers always welcome! ;-)
thanks