SeaGlass is a system designed by security researchers at the University of Washington to measure IMSI-catcher use across a city.   Cellular sensors are built from off-the-shelf parts and installed into volunteers’ vehicles Sensor data is continuously uploaded from vehicles and aggregated into a city-wide view Algorithms find anomalies in the cellular network that indicate IMSI-catchers

The Open Source Survey is an open data project by GitHub and collaborators from academia, industry, and the broader open source community.