Catching Stingrays with Rayhunter
Why This Matters
Mobile‑network surveillance tools — better known as IMSI‑catchers or “Stingrays” — pretend to be legitimate cell towers so they can collect device identifiers or even downgrade encryption. They’re often deployed at protests, border crossings, and large public events, but ordinary users have almost no visibility when one is nearby. Rayhunter flips that script: with nothing more than a pocket‑sized hotspot, you can flag suspicious towers in real time and share your findings with the wider privacy community.