CrowdSec

CrowdSec is a collaborative cybersecurity platform that combines an open source Security Engine with crowd-sourced threat intelligence and curated IP blocklists to block malicious traffic. CrowdSec is an open source security engine with crowd-sourced threat intelligence and curated IP blocklists that block malicious traffic before attacks.

CrowdSec is free as an open source Security Engine, and it sells paid plans for blocklists and enterprise features. Exact paid prices are listed on its pricing page and are not reproduced here, so check crowdsec.net for current plans.

Yes. The CrowdSec Security Engine is open source and free to use, and the community shares threat signals. Paid plans add curated blocklists and enterprise capabilities. A separate time-limited trial is not stated.

Key features of undefined: Open source Security Engine; Curated blocklists for preemptive blocking of mass exploitation attempts; Real-time IP reputation and attacker behavior context; Industry and service-specific lists such as DDoS, botnets, VPNs and proxies; Signals from 70,000+ users in 190+ countries.

CrowdSec is used by security and DevOps teams, system administrators and managed service providers who want to block malicious IPs and reduce alert noise. Its open source engine suits teams that want community-driven protection on their own servers, while blocklists serve larger organizations.