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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

Pinned Loading

  1. crowdsec crowdsec Public

    Open-source IDS/IPS, WAF and bot detection for Linux, Windows, Docker and Kubernetes, with a crowdsourced blocklist of malicious IPs.

    Go 15.6k 760

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 267 256

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

    Crowdsec bouncer written in golang for firewalls

    Go 207 65

Repositories

Showing 10 of 132 repositories
  • crowdsec Public

    Open-source IDS/IPS, WAF and bot detection for Linux, Windows, Docker and Kubernetes, with a crowdsourced blocklist of malicious IPs.

    crowdsecurity/crowdsec's past year of commit activity
    Go 15,574 MIT 760 234 (1 issue needs help) 76 Updated Nov 12, 2026
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub's past year of commit activity
    Python 267 MIT 256 133 (6 issues need help) 52 Updated Nov 12, 2026
  • cs-openresty-bouncer Public

    CrowdSec bouncer for OpenResty

    crowdsecurity/cs-openresty-bouncer's past year of commit activity
    Shell 23 MIT 8 9 3 Updated Nov 12, 2026
  • crowdsec-service-api-sdk-python Public

    Service API Python SDK

    crowdsecurity/crowdsec-service-api-sdk-python's past year of commit activity
    Python 3 MIT 0 0 38 Updated Nov 12, 2026
  • hub-dev Public Forked from crowdsecurity/hub

    Hub Dev

    crowdsecurity/hub-dev's past year of commit activity
    Python 0 MIT 262 0 1 Updated Nov 12, 2026
  • cs-apache2-bouncer Public

    Apache httpd access module for Crowdsec service

    crowdsecurity/cs-apache2-bouncer's past year of commit activity
    C 11 MIT 5 2 0 Updated Nov 12, 2026
  • sec-lists Public

    Repository to track keywords & patterns lists used by crowdsec parsers and scenarios

    crowdsecurity/sec-lists's past year of commit activity
    JavaScript 19 MIT 26 0 25 Updated Nov 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 52 105 41 8 Updated Nov 11, 2026
  • coraza Public Forked from corazawaf/coraza

    OWASP Coraza WAF is a golang modsecurity compatible web application firewall library

    crowdsecurity/coraza's past year of commit activity
    Go 1 Apache-2.0 390 0 1 Updated Nov 10, 2026
  • home-assistant-addons Public

    Home Assistant Crowdsec Addons

    crowdsecurity/home-assistant-addons's past year of commit activity
    Dockerfile 99 MIT 22 13 5 Updated Nov 10, 2026
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