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Dev tools · September 22, 2020

CrowdSec, an open-source, modernized and collaborative fail2ban

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

CrowdSec, an open-source, modernized and collaborative fail2ban launched on September 22, 2020 with 15 votes, #961 of 3,898 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 6 years on.

Visit github.com ↗Alternativestop 25% of September 2020

In plain words

CrowdSec is an open-source security tool designed as a modern alternative to fail2ban. It detects and responds to malicious behavior on servers and applications by analyzing logs and blocking IP addresses. The tool is built for developers and system administrators who manage web infrastructure. CrowdSec stands out through its collaborative approach, allowing users to share threat intelligence across a community network to improve collective security.

written from the facts on this page · September 2026

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