How To Detect IMSI Catchers (Stingrays) With RayHunter | Privacy Hardware #tech #imsicatcher
The short version: STS Technologies LLC spotlights RayHunter, an open-source tool for sniffing out IMSI catchers, a reminder that cell-site simulators and ALPRs are two heads of the same surveillance beast.
Our Take
Credit to STS Technologies LLC for putting a spotlight on RayHunter, the EFF-backed open-source project that lets regular people check whether a Stingray-style cell-site simulator is lurking nearby. IMSI catchers and ALPR networks don't get deployed by the same agencies in the same way, but they share a DNA: both are passive dragnets that vacuum up data on everyone in range, both were sold to the public as narrow tools for catching bad guys, and both have quietly become default infrastructure with almost no public oversight or disclosure requirements.
What makes RayHunter notable isn't just the tech — it's the posture. Instead of waiting for a public records request or a leaked procurement document to find out surveillance gear is operating in your city, you can run a $20 device and get your own evidence. That's the same philosophy behind documenting Flock Safety cameras block by block: don't rely on the agency's press release, go look for yourself. If you haven't checked what's watching your commute, our camera map is a good place to start.
None of this hardware fixes the underlying problem, though. A phone that can detect a rogue cell tower, or a map that shows you a plate reader on your corner, is a diagnostic tool — it tells you the disease is real, not how to cure it. The cure is policy: data retention limits, warrant requirements, public audit logs, and sunset clauses that most ALPR and IMSI deployments currently lack. If this video got you thinking about who's listening or watching without asking, turn that energy into pressure on your city council — our take-action page has the templates.
This is DeFlock The USA’s original commentary. The video above is the work of STS Technologies LLC, published on YouTube — full credit to the creator.