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crowdsec

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 10.2k 499

  2. hub hub Public

    Main repository for crowdsec scenarios/parsers

    Python 189 169

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

    Crowdsec bouncer written in golang for firewalls

    Go 131 46

Repositories

Showing 10 of 112 repositories
  • hub Public

    Main repository for crowdsec scenarios/parsers

    crowdsecurity/hub’s past year of commit activity
    Python 189 MIT 169 88 (3 issues need help) 48 Updated Apr 22, 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 31 81 45 9 Updated Apr 22, 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 10,167 MIT 499 166 (1 issue needs help) 40 Updated Apr 22, 2025
  • helm-charts Public

    CrowdSec community kubernetes helm charts

    crowdsecurity/helm-charts’s past year of commit activity
    Shell 26 MIT 38 14 (1 issue needs help) 5 Updated Apr 22, 2025
  • crowdsecurity/crowdsec-splunk-app’s past year of commit activity
    Python 0 MIT 3 1 0 Updated Apr 21, 2025
  • crowdsecurity/blocklist-efficiency-tester’s past year of commit activity
    Shell 1 0 0 0 Updated Apr 18, 2025
  • crowdsec-service-api-sdk-python Public

    Service API Python SDK

    crowdsecurity/crowdsec-service-api-sdk-python’s past year of commit activity
    Python 1 MIT 0 0 1 Updated Apr 18, 2025
  • crowdsecurity/crowdsec-splunk-soar-connectors’s past year of commit activity
    Python 0 Apache-2.0 2 0 0 Updated Apr 18, 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 Apr 17, 2025
  • cs-standalone-php-bouncer Public

    CrowdSec bouncer for PHP Website

    crowdsecurity/cs-standalone-php-bouncer’s past year of commit activity
    PHP 15 MIT 2 0 0 Updated Apr 17, 2025