OSSEC Downloads

Pick the OSSEC version you want to install.

Basic open source OSSEC is just a download away below. OSSEC+ provides more simply by registering. Need PCI compliance or more FIM protections, our PCI as a Service and FIM as a Service will handle those for you as a low cost monthly subscription. 

If you need enterprise-level intrusion prevention, integration, and support out of the box, commercial Atomic OSSEC is the ideal option. Get the most advanced and comprehensive OSSEC, Atomic OSSEC, for as little as under $5 per agent per month.

OSSEC

Open Source Security

Version: 4.0.0

Basic out-of-the box ruleset. For technical developers on a budget. Community support.

NOTE: Does not include advanced capabilities of Atomic OSSEC.

OSSEC+

Open Source Security

Version: 4.0.0

OSSEC + Get hundreds of additional rules, and machine learning. Free. Registration required.

NOTE: Does not include advanced capabilities of Atomic OSSEC.

Atomic OSSEC

EDR, Compliance

Version: 7.0.0

Endpoint Detection and Response (EDR) solution that provides the security strength, innovation, and coverage enterprises and federal agencies require. On-prem, cloud, hybrid and air gapped environments.

SaaS Solutions

FIM as a Service

Easy-to-Use FIM

Version: 7.0.0

Detect unauthorized changes in real time and satisfy PCI DSS requirements via an easy-to-use, low cost monthly subscription.

PCI as a Service

Easy-to-Use Compliance

Version: 7.0.0

Low-cost, easy-to-use monthly PCI 4.0 compliance service automates monitoring and reporting across cloud / server environments. Professional support.

Atomic OSSEC SaaS

EDR, Compliance

Version: 7.0.0

Combines EDR with SaaS convenience for advanced endpoint and cloud workload protection. Professional support. Monthly subscription.

OSSEC Product Comparison

See the advanced features and support that come with our advanced commercial versions. Our PCI as a Service and FIM as a Service products are specific SaaS versions that are covered further below.

Feature OSSEC OSSEC+ Atomic OSSEC Atomic OSSEC SaaS
OSSEC Version 4.0.0 4.0.0 7.0.0 7.0.0
Management Console (OSSEC GUI) Command Line Command Line
Dedicated support staff expertise—365×7
Log-based Intrusion Detection
Rootkit Detection
Malware Detection
Active Response
File Integrity Monitoring Advanced Advanced
System Inventory
OSSEC Rules Included Hundreds 7,100 7,100
Machine Learning
Crowdsourced Threat Intelligence Basic Robust Robust
Advanced OSSEC Agent Management
Firewall Management
Antivirus / Antimalware Protection
Vulnerability Management
Native Cloud Provider Integration (AWS, Azure, GCP)
Malware Protection
Global Threat Intelligence
Compliance Auditing & Reporting
Role Based Access Control
Report Generation System and Search Engine
Configuration Management System
Rollback Control System
Native SIEM Integration (Splunk, Arcsight, others)
Open Search and ELK Integration
LLM Integration (Claude, Gemini, Open API, Ollama)
Slack, Syslog, email, PagerDuty and Jira Integrations
Cloudflare Integration
Output Data Routing
Long Term Data Storage Integrations (Amazon S3 and Glacier)
System and Application Inventory Module
SBOM Generation and Management
Advanced Encryption (PKI and Noise Socket)
Reduced Capital Investment Costs
Less Management And Configuration Effort
DLP – Data Loss prevention
Server Isolation
Agent Automation Advanced



See what Atomic OSSEC can do for you.

PCI as a Service

Organizations now have access to an affordable service that reduces the complexity of PCI DSS 4.0 compliance.

Atomicorp PCI as a Service simplifies PCI DSS v4.0 compliance with a low-cost, monthly monitoring and reporting service that cuts stress, time, manual effort, and overall cost. Don’t take on the PCI learning curve alone. We provide proven PCI software controls and expert support for first-time compliance and SMBs seeking an affordable, low-barrier entry.

  • Low monthly cost with predictable pricing
  • Automated PCI monitoring and reporting
  • Reduced manual effort and audit fatigue
  • Built for PCI DSS v4.0—and future updates
  • Ideal for SMBs and first-time PCI programs
  • Backed by professional support

FIM as a Service

Meet continuous monitoring requirements, detect threats in real time, get alerts, monthly reports, and have a system of record.

Atomicorp FIM as a Service is file integrity monitoring (FIM) made easy and affordable. The low-cost, monthly monitoring and reporting service cuts stress, time, manual effort, and overall cost.

Atomicorp’s new monthly FIM as a Service includes:

  • Real-time detection – Know within milliseconds when files are added, modified, or deleted.
  • Who and where data – Identify who made the change and where they logged in from, across most operating systems.
  • Legacy OS-compatible / legacy-safe operation – Agentless, scheduled monitoring that won’t disrupt sensitive legacy or end-of-life IT and OT systems.
  • And more.