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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 11.1k 527

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 206 184

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

    Crowdsec bouncer written in golang for firewalls

    Go 145 48

Repositories

Showing 10 of 118 repositories
  • 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 11,054 MIT 527 175 (1 issue needs help) 53 Updated Sep 3, 2025
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub’s past year of commit activity
    Python 206 MIT 183 93 (3 issues need help) 56 Updated Sep 3, 2025
  • packaging-freebsd Public
    crowdsecurity/packaging-freebsd’s past year of commit activity
    Shell 1 0 0 0 Updated Sep 2, 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 36 85 45 11 Updated Sep 2, 2025
  • lua-cs-bouncer Public
    crowdsecurity/lua-cs-bouncer’s past year of commit activity
    Lua 13 MIT 14 16 5 Updated Sep 1, 2025
  • hub-dev Public Forked from crowdsecurity/hub

    Hub Dev

    crowdsecurity/hub-dev’s past year of commit activity
    Python 0 MIT 185 0 9 Updated Sep 1, 2025
  • nodejs-cs-bouncer Public

    The official Crowdsec Node.js Bouncer/Remediation Component

    crowdsecurity/nodejs-cs-bouncer’s past year of commit activity
    TypeScript 1 MIT 1 1 1 Updated Aug 29, 2025
  • connectors Public Forked from OpenCTI-Platform/connectors

    OpenCTI Connectors

    crowdsecurity/connectors’s past year of commit activity
    Python 0 Apache-2.0 504 0 0 Updated Aug 26, 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 Aug 26, 2025
  • home-assistant-addons Public

    Home Assistant Crowdsec Addons

    crowdsecurity/home-assistant-addons’s past year of commit activity
    Dockerfile 83 MIT 15 7 0 Updated Aug 25, 2025
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