# google/nogotofail

An on-path blackbox network traffic security testing tool

Repository: https://github.com/google/nogotofail
Canonical: https://ross.abutalabs.com/products/nogotofail
Language: Python
License: Apache-2.0
License Family: permissive
Archived: true
Last push: 2022-10-03T14:56:54+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4326, "days_push": 1430, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2951, forks 410 (observed 2026-08-28T04:07:32.027672+00:00)

## What it is
Nogotofail is an on-path (man-in-the-middle) blackbox network traffic security testing tool built in Python. It detects weak TLS/SSL connections, certificate verification bugs, SSL/STARTTLS stripping, and cleartext traffic on devices and applications.

## Use cases
- test apps for weak TLS/SSL connections
- detect cleartext traffic leaking sensitive data
- find SSL certificate verification bugs
- test for SSL and STARTTLS stripping vulnerabilities
- audit network traffic of Android or IoT devices
- verify HTTPS implementations during security reviews

## When to choose
- you need blackbox TLS/SSL vulnerability testing of devices or apps on your network
- you want to detect cleartext and downgrade attacks transparently via iptables on Linux
- you're doing security research or app traffic audits

## When to avoid
- you need a modern actively developed tool (Python 2.7 dependency, sparse releases)
- you need Windows or macOS transparent capture support
- you want automated CI security scanning rather than interactive network testing

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: security, penetration-testing, networking, testing
- domain: security, penetration-testing, networking, developer-tools
- platform: python, cli
- tags: tls, ssl, mitm, traffic-analysis, vulnerability-scanning, linux

## Member repositories
- google/nogotofail (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:32.027672+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 2026-08-29T18:47:36.871442+00:00, confidence not recorded.
  - readme: https://github.com/google/nogotofail (fetched 2026-08-28T04:07:32.027672+00:00, sha c35e5561e20e)
- Data as of 2026-08-30T08:39:29.467469+00:00.