OSSIM: The Open Source SIEM | AlienVault

AlienVault OSSIM:
The World’s Most Widely Used
Open Source SIEM

• Complete experience of OSSIM capabilities
• For users who want to install themselves

OSSIM is Trusted by 195,000+ Security Professionals in 175 Countries… and Counting

OSSIM, AlienVault’s Open Source Security Information and Event Management (SIEM) product, provides you with a feature-rich open source SIEM complete with event collection, normalization and correlation. Launched by security engineers because of the lack of available open source products, OSSIM was created specifically to address the reality many security professionals face: A SIEM, whether it is open source or commercial, is virtually useless without the basic security controls necessary for security visibility.

Compare Open Source to Commercial

Our Open Source SIEM (OSSIM) addresses this reality by providing one unified platform with many of the essential security capabilities you need like:

  • Asset discovery
  • Vulnerability assessment
  • Intrusion detection
  • Behavioral monitoring
  • SIEM

OSSIM leverages the power of the AlienVault Open Threat Exchange by allowing users to both contribute and receive real-time information about malicious hosts. In addition, we provide ongoing development for OSSIM because we believe that everyone should have access to sophisticated security technologies, to improve the security of all. From the researchers who need a platform for experimentation and the unsung heroes who can't convince their companies that security is a problem, OSSIM offers you a chance to increase security visibility and control in your network.

Compare AlienVault Products: OSSIM vs USM

Which product is right for you?

For more advanced functionality, AlienVault’s USM platform puts built-in, essential security controls and threat intelligence into the hands of IT teams with limited resources.

IT or Security practitioners can now deploy a single platform with essential security controls and seamlessly integrated threat intelligence that quickly identifies threats affecting your network and how to respond to them, on day one.

Try USM Free

AlienVault USM offers:

  • Log management
  • Advanced threat detection with 2000+ built-in correlation rules that eliminate the need for you to create your own
  • Actionable threat intelligence from AlienVault Labs that answers critical questions about threats targeting your network, such as “who”, “what”, “why”, and “how”
  • 150+ compliance & threat reports to give you the information you need for auditors and senior management
  • Support for PCI, HIPAA, GPG13, & SOX compliance requirements
“With so many products/services out there, it’s hard for people to know where to start and where they can get the most bang for their buck. OSSIM was a great starting point for me, and migrating to USM has brought even more value.”

Matthew J. Frederickson
– Cyber Security Specialist at Council Rock School District

Find the Right Solution for Your Organization!


Open Source
No Threat Intelligence Data
No Curated Correlation Directives
Community-Powered Threat Data via OTX (Open Threat Exchange)
Log Retention Only for SIEM Events
Basic Reports
Single Server Deployment Architecture
Open Source
No Documentation
Community Support via the AlienVault Forums

AlienVault USM Platform

Starts at $5050
Threat Intelligence Updated Weekly by AlienVault Labs. Includes SIEM Correlation Directives, Signatures for Asset Discovery, IDS and Vulnerability Assessment as well as Incident Response Templates
Over 2500 Correlation Directives Updated Weekly by the AlienVault Labs Threat Research Team
Community-Powered Threat Data via OTX (Open Threat Exchange)
Robust Log Management, Log Search & Secure Long-Term Log Retention
200+ Customizable Reports, Including Compliance-Specific Reports for PCI-DSS, HIPAA, NERC CIP, GLBA and FISMA
Can Deploy Multiple Servers Across Geographies, a Single Server with Multiple Sensors or a Multi-Tier Federated Architecture for Managed Security Service Providers
Multi-User, Role-based Access Control with Permission Templates
Dedicated phone & email support from the AlienVault Support Team, plus AlienVault Product Forums and Free Monthly Training Webinars
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