# CellularPrivacy/Android-IMSI-Catcher-Detector

AIMSICD • Fight IMSI-Catcher, StingRay and silent SMS!

Repository: https://github.com/CellularPrivacy/Android-IMSI-Catcher-Detector
Canonical: https://ross.abutalabs.com/products/android-imsi-catcher-detector
Homepage: https://cellularprivacy.github.io/Android-IMSI-Catcher-Detector/
Language: Java
License: GPL-3.0
License Family: copyleft
Topics: android
Last push: 2026-07-12T17:01:25+00:00

## Health v2 (maintenance only)
Score: 64/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 92, release rhythm 8, longevity 100
- inputs: {"age_days": 4666, "days_push": 52, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5403, forks 1055 (observed 2026-08-28T04:09:17.586209+00:00)

## What it is
AIMSICD is an open-source Android application that detects IMSI-Catchers (fake cell towers, also known as StingRays) which perform man-in-the-middle attacks on mobile phones. It analyzes tower information consistency, signal strength, silent SMS, and neighboring cell data to warn users of cellular interception.

## Use cases
- detect fake cell towers spying on my phone
- find out if police stingray is tracking me at a protest
- detect silent SMS on my Android device
- monitor cell tower consistency for MITM attacks
- protect my calls and texts from cellular interception
- check if my phone is connected to a rogue base station

## When to choose
- you use an Android phone and want to detect IMSI-catcher or StingRay surveillance
- you attend protests or work in a privacy-sensitive environment and need cellular threat awareness
- you want a free, open-source cellular security tool

## When to avoid
- you need an iOS or desktop solution
- you expect a fully mature, guaranteed detection tool - the project is in alpha and detection is heuristic
- you need active protection rather than detection

## Facets
- artifact type: application
- maturity: experimental
- function: security, monitoring, alerting
- domain: security, privacy, mobile-development
- platform: -
- tags: imsi-catcher, stingray, cellular-security, surveillance-detection, gsm, silent-sms, android

## Member repositories
- CellularPrivacy/Android-IMSI-Catcher-Detector (main) score 64

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:17.586209+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:57:48.199536+00:00, confidence not recorded.
  - readme: https://github.com/CellularPrivacy/Android-IMSI-Catcher-Detector (fetched 2026-08-28T04:09:17.586209+00:00, sha 760816b2fb0f)
  - homepage: https://cellularprivacy.github.io/Android-IMSI-Catcher-Detector/ (fetched 2026-08-29T08:52:24.825525+00:00, sha c74629f68c6e)
- Data as of 2026-08-30T08:39:29.467469+00:00.