CrowdSecurity is an open-source security software publisher whose lightweight tools turn any Windows server or workstation into a collaborative shield against brute-force, scanning, and credential-stuffing attacks. The company’s flagship CrowdSec Agent passively parses local event logs—RDP, SQL, FTP, IIS, Exchange, custom apps—and instantly matches suspicious patterns against a community-curated blocklist that now counts millions of malicious IPs. When a threshold is crossed, the agent writes a concise signal to CrowdSecurity’s shared intelligence cloud, simultaneously receiving real-time reputation data from every other node in the network. Complementing this sensor, the CrowdSec Windows Firewall Bouncer acts as a native enforcement layer: it subscribes to the local agent’s decisions and pushes concise firewall rules that drop or rate-limit offending addresses before they ever reach the application stack. Together the two components provide a self-updating, crowd-powered IPS/IDS solution that scales from a single laptop to multi-site domains without adding bulky appliances or proprietary agents. Typical use cases range from protecting public-facing RDP gateways and SMB shares to shielding gaming servers, CI pipelines, and e-commerce checkout pages from credential abuse. Because the engine is modular, administrators can write custom parsers for niche log formats or chain additional bouncers for IIS, SQL, or third-party WAFs. CrowdSecurity’s software is offered free of charge on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always install the latest upstream release, and can be queued for batch deployment across any number of machines.