CrowdSec is a collaborative cybersecurity platform that provides curated threat intelligence powered by crowd-sourced data. It offers real-time blocklists to protect against mass exploitation attempts, DDoS attacks, botnets, and malicious VPNs or residential proxies. CrowdSec's blocklists are updated in real-time, featuring a 5% daily rotation of IPs to ensure current and relevant data for firewall protection.