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@crowdsecurity

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

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

    Go 10.5k 510

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 198 176

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

    Crowdsec bouncer written in golang for firewalls

    Go 134 45

Repositories

Showing 10 of 116 repositories
  • cs-openresty-bouncer Public

    CrowdSec bouncer for OpenResty

    crowdsecurity/cs-openresty-bouncer’s past year of commit activity
    Shell 16 MIT 6 6 4 Updated Jun 20, 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 10,544 MIT 510 171 (1 issue needs help) 46 Updated Jun 19, 2025
  • lua-cs-bouncer Public
    crowdsecurity/lua-cs-bouncer’s past year of commit activity
    Lua 13 MIT 13 17 5 Updated Jun 19, 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 34 85 43 8 Updated Jun 19, 2025
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub’s past year of commit activity
    Python 198 MIT 176 92 (3 issues need help) 41 Updated Jun 19, 2025
  • cs-envoy-bouncer Public
    crowdsecurity/cs-envoy-bouncer’s past year of commit activity
    1 MIT 0 0 0 Updated Jun 19, 2025
  • cs-nginx-bouncer Public

    CrowdSec bouncer for Nginx

    crowdsecurity/cs-nginx-bouncer’s past year of commit activity
    Shell 52 MIT 10 7 1 Updated Jun 19, 2025
  • home-assistant-addons Public

    Home Assistant Crowdsec Addons

    crowdsecurity/home-assistant-addons’s past year of commit activity
    Dockerfile 81 MIT 15 7 0 Updated Jun 18, 2025
  • crowdsec-service-api-sdk-python Public

    Service API Python SDK

    crowdsecurity/crowdsec-service-api-sdk-python’s past year of commit activity
    Python 1 MIT 0 0 1 Updated Jun 18, 2025
  • packaging-freebsd Public
    crowdsecurity/packaging-freebsd’s past year of commit activity
    Shell 0 0 0 0 Updated Jun 18, 2025
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