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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

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

    Go 10.8k 523

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 204 182

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

    Crowdsec bouncer written in golang for firewalls

    Go 137 48

Repositories

Showing 10 of 118 repositories
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub’s past year of commit activity
    Python 204 MIT 182 91 (3 issues need help) 52 Updated Aug 10, 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 10,810 MIT 523 176 (1 issue needs help) 51 Updated Aug 8, 2025
  • home-assistant-addons Public

    Home Assistant Crowdsec Addons

    crowdsecurity/home-assistant-addons’s past year of commit activity
    Dockerfile 83 MIT 15 8 1 Updated Aug 8, 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 33 84 43 8 Updated Aug 7, 2025
  • cs-ebpf-bouncer Public
    crowdsecurity/cs-ebpf-bouncer’s past year of commit activity
    Go 0 0 0 0 Updated Aug 7, 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 8 MIT 2 7 4 Updated Aug 7, 2025
  • cs-envoy-bouncer Public
    crowdsecurity/cs-envoy-bouncer’s past year of commit activity
    3 MIT 0 0 1 Updated Aug 6, 2025
  • plugins Public Forked from opnsense/plugins

    OPNsense plugin collection

    crowdsecurity/plugins’s past year of commit activity
    PHP 1 BSD-2-Clause 730 0 0 Updated Aug 5, 2025
  • pfSense-pkg-crowdsec Public
    crowdsecurity/pfSense-pkg-crowdsec’s past year of commit activity
    PHP 65 4 25 2 Updated Aug 4, 2025
  • cs-firewall-bouncer Public

    Crowdsec bouncer written in golang for firewalls

    crowdsecurity/cs-firewall-bouncer’s past year of commit activity
    Go 137 MIT 48 25 (1 issue needs help) 4 Updated Aug 4, 2025
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