Meet Rayhunter: A New Open Source Tool from EFF to Detect Cellular Spying

https://www.eff.org/deeplinks/2025/03/meet-rayhunter-new-open-source-tool-eff-detect-cellular-spying

Acquiring a Rayhunter device is a fantastic step toward enhancing your privacy and security because it empowers you to detect cell-site simulators (CSS), like Stingrays, which can covertly monitor your mobile activity. Developed by the EFF as an open-source tool, Rayhunter runs on an affordable mobile hotspot and allows anyone—regardless of technical expertise—to identify these invasive surveillance devices that mimic legitimate cell towers.

By spotting suspicious activity, such as forced network downgrades or unusual IMSI requests, it helps you safeguard your personal data and location from unauthorized tracking, offering peace of mind in an era of pervasive digital spying.