Skip to content
@crowdsecurity

crowdsec

README.md

CrowdSec

CrowdSec Website • Linkedin Badge Reddit Badge YouTube Badge • CrowdSec Console

Join the CrowdSec Community on Discord

Contribute to CrowdSec open source projects

🌟 Give a Gitstar 🌟

Github Badge

<TL;DR>

CrowdSec is a free, modern, and collaborative behavior detection engine coupled with a global IP reputation network. It stacks on fail2ban's philosophy but is IPV6 compatible and 60x faster (Go vs. Python) and uses Grok patterns to parse logs. CrowdSec is engineered for modern Cloud / Containers / VM-based infrastructures (by decoupling detection and remediation). Once detected, you can remedy threats with various methods (firewall block, Nginx HTTP 403, Captchas, …) while sharing the aggressive IP to CrowdSec Network and improving everyone's security further.

OSS Projects

  • CrowdSec - The open-source and participative IPS able to analyze visitor behavior & provide an adapted response to all kinds of attacks. It also leverages the crowd power to generate a global CTI database to protect the user network.
  • CrowdSec Hub: Host scenarios and parsers for CrowdSec Agent
  • Home Assistant CrowdSec Addons: CrowdSec for home-assistant.io
  • Firewall Bouncer: Crowdsec bouncer written in golang for firewalls

Pinned Loading

  1. crowdsec crowdsec Public

    CrowdSec - the open-source and participative security solution offering crowdsourced protection against malicious IPs and access to the most advanced real-world CTI.

    Go 11.3k 537

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 212 188

  3. cs-firewall-bouncer cs-firewall-bouncer Public

    Crowdsec bouncer written in golang for firewalls

    Go 150 49

Repositories

Showing 10 of 120 repositories
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub’s past year of commit activity
    Python 212 MIT 188 97 (3 issues need help) 58 Updated Oct 14, 2025
  • cs-firewall-bouncer Public

    Crowdsec bouncer written in golang for firewalls

    crowdsecurity/cs-firewall-bouncer’s past year of commit activity
    Go 150 MIT 49 25 (1 issue needs help) 4 Updated Oct 14, 2025
  • cs-custom-bouncer Public

    CrowdSec bouncer to use custom scripts

    crowdsecurity/cs-custom-bouncer’s past year of commit activity
    Python 14 MIT 13 2 1 Updated Oct 14, 2025
  • crowdsec-yaml-schemas Public
    crowdsecurity/crowdsec-yaml-schemas’s past year of commit activity
    4 1 3 1 Updated Oct 14, 2025
  • crowdsec Public

    CrowdSec - the open-source and participative security solution offering crowdsourced protection against malicious IPs and access to the most advanced real-world CTI.

    crowdsecurity/crowdsec’s past year of commit activity
    Go 11,324 MIT 537 171 (1 issue needs help) 61 Updated Oct 14, 2025
  • cs-cloudflare-worker-bouncer Public

    A CrowdSec Bouncer that syncs the decisions made by CrowdSec with CloudFlare's firewall using cloudflare workers. Manages multi user, multi account, multi zone setup. Supports IP, Country and AS scoped decisions.

    crowdsecurity/cs-cloudflare-worker-bouncer’s past year of commit activity
    Go 11 MIT 9 5 7 Updated Oct 14, 2025
  • cs-blocklist-mirror Public
    crowdsecurity/cs-blocklist-mirror’s past year of commit activity
    Go 21 MIT 6 1 2 Updated Oct 14, 2025
  • cs-haproxy-spoa-bouncer Public

    EXPERIMENTAL: HAProxy spoe filter for CrowdSec - WAF and IP protection

    crowdsecurity/cs-haproxy-spoa-bouncer’s past year of commit activity
    Go 10 MIT 3 10 7 Updated Oct 14, 2025
  • crowdsec-docs Public

    CrowdSec Documentation: Comprehensive guides, tutorials, and references for installing, configuring, and using CrowdSec, an open-source cybersecurity platform. Contributions welcome!

    crowdsecurity/crowdsec-docs’s past year of commit activity
    MDX 38 89 45 15 Updated Oct 13, 2025
  • cs-windows-firewall-bouncer Public

    Crowdsec bouncer for the Windows Firewall

    crowdsecurity/cs-windows-firewall-bouncer’s past year of commit activity
    C# 26 MIT 4 4 4 Updated Oct 13, 2025
View all repositories

Sponsoring

  • @antonmedv
GitHub Sponsor