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crowdsec

README.md

CrowdSec

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<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

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  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 12.5k 575

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 221 201

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

    Crowdsec bouncer written in golang for firewalls

    Go 170 50

Repositories

Showing 10 of 126 repositories
  • cloudflare-autonomous-bouncer-deployer Public

    GUI allowing to deploy or clear the autonomous worker bouncer on a given cloudflare account

    crowdsecurity/cloudflare-autonomous-bouncer-deployer’s past year of commit activity
    JavaScript 0 MIT 0 0 0 Updated Feb 13, 2026
  • IPDEX-JS Public

    JS version of IPDEX

    crowdsecurity/IPDEX-JS’s past year of commit activity
    TypeScript 0 MIT 0 0 0 Updated Feb 13, 2026
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub’s past year of commit activity
    Python 221 MIT 201 101 (4 issues need help) 76 Updated Feb 12, 2026
  • 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 12,499 MIT 575 196 (1 issue needs help) 76 Updated Feb 12, 2026
  • 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 42 98 40 17 Updated Feb 12, 2026
  • helm-charts Public

    CrowdSec community kubernetes helm charts

    crowdsecurity/helm-charts’s past year of commit activity
    Shell 41 MIT 54 29 (1 issue needs help) 13 Updated Feb 11, 2026
  • ipdex Public
    crowdsecurity/ipdex’s past year of commit activity
    Go 47 MIT 7 3 1 Updated Feb 9, 2026
  • crowdsec-tracker-api-sdk-python Public

    Live Exploit Tracker API Python SDK

    crowdsecurity/crowdsec-tracker-api-sdk-python’s past year of commit activity
    Python 0 MIT 0 0 0 Updated Feb 6, 2026
  • crowdsec-service-api-sdk-python Public

    Service API Python SDK

    crowdsecurity/crowdsec-service-api-sdk-python’s past year of commit activity
    Python 2 MIT 0 0 1 Updated Feb 6, 2026
  • php-capi-client Public

    The official PHP client for the CrowdSec Central API (CAPI)

    crowdsecurity/php-capi-client’s past year of commit activity
    PHP 5 MIT 2 0 0 Updated Feb 6, 2026
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