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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 10.6k 516

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 197 179

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

    Crowdsec bouncer written in golang for firewalls

    Go 136 47

Repositories

Showing 10 of 117 repositories
  • 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 7 MIT 2 7 5 Updated Jul 7, 2025
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub’s past year of commit activity
    Python 197 MIT 179 92 (3 issues need help) 43 Updated Jul 7, 2025
  • sec-lists Public

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

    crowdsecurity/sec-lists’s past year of commit activity
    14 MIT 22 0 4 Updated Jul 7, 2025
  • helm-charts Public

    CrowdSec community kubernetes helm charts

    crowdsecurity/helm-charts’s past year of commit activity
    Shell 30 MIT 42 15 (1 issue needs help) 8 Updated Jul 7, 2025
  • go-cs-bouncer Public

    Go library to use crowdsec API.

    crowdsecurity/go-cs-bouncer’s past year of commit activity
    Go 10 MIT 11 2 2 Updated Jul 7, 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 10,626 MIT 516 176 (1 issue needs help) 51 Updated Jul 4, 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 11 Updated Jul 4, 2025
  • cs-opencti-external-import-connector Public

    Connector which enriches your knowledge by using CrowdSec's CTI API.

    crowdsecurity/cs-opencti-external-import-connector’s past year of commit activity
    Python 1 1 0 0 Updated Jul 4, 2025
  • connectors Public Forked from OpenCTI-Platform/connectors

    OpenCTI Connectors

    crowdsecurity/connectors’s past year of commit activity
    Python 0 Apache-2.0 483 0 0 Updated Jul 4, 2025
  • cs-windows-firewall-bouncer Public

    Crowdsec bouncer for the Windows Firewall

    crowdsecurity/cs-windows-firewall-bouncer’s past year of commit activity
    C# 23 MIT 4 4 1 Updated Jun 30, 2025
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