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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 11.9k 556

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 218 194

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

    Crowdsec bouncer written in golang for firewalls

    Go 158 49

Repositories

Showing 10 of 123 repositories
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub’s past year of commit activity
    Python 218 MIT 194 99 (4 issues need help) 61 Updated Dec 24, 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 11,939 MIT 556 190 (1 issue needs help) 67 Updated Dec 23, 2025
  • bats-file Public Forked from bats-core/bats-file

    Common filesystem assertions for Bats

    crowdsecurity/bats-file’s past year of commit activity
    Shell 0 CC0-1.0 57 0 0 Updated Dec 23, 2025
  • bats-assert Public Forked from bats-core/bats-assert

    Common assertions for Bats

    crowdsecurity/bats-assert’s past year of commit activity
    Shell 0 CC0-1.0 81 0 0 Updated Dec 23, 2025
  • bats-core Public Forked from bats-core/bats-core

    Bash Automated Testing System

    crowdsecurity/bats-core’s past year of commit activity
    Shell 1 478 0 0 Updated Dec 23, 2025
  • crowdsec-service-api-sdk-python Public

    Service API Python SDK

    crowdsecurity/crowdsec-service-api-sdk-python’s past year of commit activity
    Python 2 MIT 0 0 1 Updated Dec 23, 2025
  • crowdsec-tracker-api-sdk-python Public

    Live Exploit Tracker API Python SDK

    crowdsecurity/crowdsec-tracker-api-sdk-python’s past year of commit activity
    Python 0 MIT 0 0 1 Updated Dec 23, 2025
  • cs-aws-waf-bouncer Public

    Crowdsec bouncer for AWS WAF

    crowdsecurity/cs-aws-waf-bouncer’s past year of commit activity
    Go 9 MIT 4 11 5 Updated Dec 23, 2025
  • example-docker-compose Public

    Example integration of crowdsec in docker-compose

    crowdsecurity/example-docker-compose’s past year of commit activity
    Dockerfile 193 33 0 3 Updated Dec 20, 2025
  • crowdsec-splunk-app Public
    crowdsecurity/crowdsec-splunk-app’s past year of commit activity
    Python 0 MIT 3 1 0 Updated Dec 19, 2025
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