# google/google-ctf

Google CTF

Repository: https://github.com/google/google-ctf
Canonical: https://ross.abutalabs.com/products/google-ctf
Homepage: https://g.co/ctf
Language: Python
License: Apache-2.0
License Family: permissive
Topics: security, ctf, ctf-challenges, google
Last push: 2026-02-11T13:11:18+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 67, release rhythm 35, longevity 100
- inputs: {"age_days": 3050, "days_push": 203, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5012, forks 594 (observed 2026-08-28T04:09:04.674473+00:00)

## What it is
A repository of most challenges used in the Google CTF since 2017, along with infrastructure for hosting them. It serves as an archive of security puzzles and a toolkit for running capture-the-flag competitions.

## Use cases
- practice solving CTF security challenges
- host a capture-the-flag competition
- study past Google CTF challenge solutions
- learn reverse engineering and exploitation skills
- set up CTF infrastructure for training events

## When to choose
- you want real-world CTF challenges for security practice
- you need infrastructure to run your own CTF event
- you're studying for security competitions or interviews

## When to avoid
- you want production-ready security software - the code has intentional vulnerabilities
- you need a supported Google product
- you're looking for a CTF scoring platform rather than challenges

## Facets
- artifact type: dataset
- maturity: active
- function: security, penetration-testing, developer-tools
- domain: security, penetration-testing, education
- platform: cross-platform, python
- tags: ctf, ctf-challenges, capture-the-flag, security-training, challenge-archive, docker

## Member repositories
- google/google-ctf (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:04.674473+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 2026-08-29T18:17:32.915818+00:00, confidence not recorded.
  - readme: https://github.com/google/google-ctf (fetched 2026-08-28T04:09:04.674473+00:00, sha 8c10740b84cc)
  - homepage: https://g.co/ctf (fetched 2026-08-29T08:58:23.017027+00:00, sha f1c9be2bd98d)
- Data as of 2026-08-30T08:39:29.467469+00:00.