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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 12.3k 570

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 221 199

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

    Crowdsec bouncer written in golang for firewalls

    Go 168 50

Repositories

Showing 10 of 124 repositories
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub’s past year of commit activity
    Python 221 MIT 199 101 (4 issues need help) 69 Updated Jan 27, 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 41 94 40 15 Updated Jan 27, 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 12,334 MIT 570 192 (1 issue needs help) 69 Updated Jan 27, 2026
  • cs-blocklist-mirror Public
    crowdsecurity/cs-blocklist-mirror’s past year of commit activity
    Go 22 MIT 7 0 2 Updated Jan 27, 2026
  • helm-charts Public

    CrowdSec community kubernetes helm charts

    crowdsecurity/helm-charts’s past year of commit activity
    Shell 40 MIT 53 29 (1 issue needs help) 12 Updated Jan 26, 2026
  • home-assistant-addons Public

    Home Assistant Crowdsec Addons

    crowdsecurity/home-assistant-addons’s past year of commit activity
    Dockerfile 89 MIT 16 10 1 Updated Jan 26, 2026
  • pfSense-pkg-crowdsec Public
    crowdsecurity/pfSense-pkg-crowdsec’s past year of commit activity
    PHP 71 4 30 0 Updated Jan 26, 2026
  • packaging-freebsd Public
    crowdsecurity/packaging-freebsd’s past year of commit activity
    Shell 1 0 0 0 Updated Jan 23, 2026
  • paloalto-xsoar-integration-fork Public Forked from demisto/content

    Demisto is now Cortex XSOAR. Automate and orchestrate your Security Operations with Cortex XSOAR's ever-growing Content Repository. Pull Requests are always welcome and highly appreciated!

    crowdsecurity/paloalto-xsoar-integration-fork’s past year of commit activity
    Python 1 MIT 1,905 0 1 Updated Jan 23, 2026
  • ipdex Public
    crowdsecurity/ipdex’s past year of commit activity
    Go 45 MIT 5 4 1 Updated Jan 22, 2026
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