About CrowdSec
CrowdSec is an open source security engine that detects attacks on your servers and blocks the attackers. It uses shared threat data from many servers to spot malicious IP addresses early.
What it does
CrowdSec reads logs from your servers and spots patterns that match attacks. Detected attackers can be blocked at your firewall or web server. Its curated blocklists and IP reputation lookups help you judge addresses before they cause trouble. The threat data also shows which known vulnerabilities attackers are using, so you can prioritize patching.
Key features
- Detect attack patterns from server logs
- Block malicious IPs at the firewall
- Look up IP reputation for suspicious addresses
- See which CVEs attackers are exploiting
- Reduce alert noise from mass scanners
Who it's for
System administrators and security teams that run public servers or websites and want protection that does not depend on a single vendor's data. Small teams without a full security operations centre can use the free tools as a starting point.
Pricing and good to know
The engine is open source under the MIT license. CrowdSec also sells commercial products and threat data services, which are separate from the open source engine. Blocking decisions should be tested first, since a false positive can lock out real users.
Highlights
- Detect attacks from server logs
- Block attacker addresses at the firewall
- Check IP reputation before trusting traffic
- See which known vulnerabilities attackers use
- Cut alert noise from mass scanners
