EFF's 4G fake-eNodeB / IMSI-catcher detector: passively monitors LTE broadcast (PCI, EARFCN, SIBs) to fingerprint cell-site simulators (Stingray/Hailstorm class) by their anomalies. Built on srsRAN; the defensive counterpart used to validate that a rogue-eNB test is detectable. EFF stopped maintaining it in December 2022 and its README advises against using it in new projects. The detector EFF maintains today is Rayhunter, also in this catalogue.
The README states that as of December 2022 the project is no longer maintained and EFF does not recommend using it in new projects. The GitHub repository is archived. See instead: Rayhunter. Source · checked 2026-09-28