EFForg/rayhunter
Rust tool to detect cell site simulators on an orbic mobile hotspot observed · 2026-08-28
Health v2 · maintenance only
93/100
- Activity 99
- Release rhythm 96
- Longevity 73
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 19
- age_days: 1029
- days_rel: 30
- days_push: 9
- n_releases_24m: 30
Adoption not part of the score
5688 stars · 469 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Rayhunter is an EFF-developed Rust tool that detects IMSI catchers (cell-site simulators, also known as stingrays) used for cellular surveillance. It runs primarily on the cheap Orbic RC400L mobile hotspot and other community-supported devices, designed for easy installation regardless of technical skill.
Use cases
- detect IMSI catchers in my area
- check if my cell traffic is being intercepted by a stingray
- monitor for cell site simulators while traveling
- detect cellular surveillance on a mobile hotspot
- find out if police surveillance devices are tracking my phone
- run cellular spy detection on cheap hardware
When to choose
- you want an affordable, dedicated hardware device for IMSI catcher detection
- you need a tool usable without deep telecom expertise
- you want an open-source, EFF-backed detector with active development
- you want to minimize false positives when scanning for stingrays
When to avoid
- you need passive detection on your existing phone without extra hardware
- you require guaranteed legal compliance outside the United States without consulting local law
- you need real-time enterprise-grade cellular network monitoring
- your device is not among the supported hardware list
Facets
application · maturity active
security monitoring networking security privacy networking embedded cross-platform imsi-catcher stingray-detection cellular-security mobile-hotspot surveillance telecommunications orbic-rc400l surveillance-detection linux
2 sources
- readme: https://github.com/EFForg/rayhunter · fetched 2026-08-28 · 79cb67a606ba
- homepage: https://efforg.github.io/rayhunter/ · fetched 2026-08-29 · c1771af357c8
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| EFForg/rayhunter | main | 93 |
For agents
markdown · JSON · MCP: product_card(name="EFForg/rayhunter")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem