The World’s Most Widely Used
Host-based Intrusion Detection System

Used by tens of thousands of organizations around the world


Server Intrusion Detection for Every Platform

Open Source HIDS

OSSEC is fully open source and free. You can tailor OSSEC for your security needs through its extensive configuration options, adding custom alert rules and writing scripts to take action when alerts occur.

Multiplatform HIDS

OSSEC offers comprehensive host-based intrusion detection across multiple platforms including Linux, Solaris, AIX, HP-UX, BSD, Windows, Mac and VMware ESX.

PCI Compliance

OSSEC helps organizations meet specific compliance requirements such as PCI DSS. It detects and alerts on unauthorized file system modification and malicious behavior that could make you non-compliant.


Contribute To The Project

Join The OSSEC Mailing List

Join The Slack Channel

OSSEC Con2019 Presentations

OSSEC Con2019

Atomicorp hosted OSSEC Con2019 on March 20-21, 2019 with over 100 attendees and sponsors.

Day 1 featured Daniel Cid, the founder of the OSSEC project, Scott Shinn, the current OSSEC Project Manager and many others. Topics included the future of OSSEC, using OSSEC to protect workloads in public and private clouds and the power of shared global threat intelligence.

Day 2 was a hands-on workshop where attendees learned rule and decoder writing, how to use OSSEC’s auditing system, and how to set up and use OSSEC with ElasticSearch and Kibana.


Atomicorp - Atomicorp Enterprise OSSEC

Atomicorp extends the power of OSSEC through extended security features that enable both detection and protection; with an easy-to-use, powerful OSSEC GUI; and full product support. Visit Atomicorp to learn more about Atomicorp Enterprise OSSEC.