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Security Onion Reviews

Vendor: Security Onion Solutions, LLC
3.6 out of 5
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What is Security Onion?

Security Onion is an open-source Linux distribution for intrusion detection, network security monitoring, and log management. It offers comprehensive solutions for enterprises seeking to enhance their cybersecurity infrastructure.

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Security Onion is the #29 ranked solution in Log Management Software. PeerSpot users give Security Onion an average rating of 7.2 out of 10. Security Onion is most commonly compared to Datadog: Security Onion vs Datadog. Security Onion is popular among the large enterprise segment, accounting for 47% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a university, accounting for 12% of all views.
Buyer's Guide
Log Management
June 2026
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Security Onion mindshare

As of June 2026, the mindshare of Security Onion in the Log Management category stands at 2.0%, down from 5.3% compared to the previous year, according to calculations based on PeerSpot user engagement data.
Log Management Mindshare Distribution
ProductMindshare (%)
Security Onion2.0%
Splunk Enterprise Security6.8%
Wazuh4.8%
Other86.4%
Log Management
 
 
Key learnings from peers
Last updated Jun 18, 2026

Valuable Features

  • "Security Onion has positively impacted my organization by greatly improving our security posture, making alert triage easier to handle, simplifying the analysis of threats, and decreasing the cost of threat analysis and detection."
  • "The most valuable feature of Security Onion for security monitoring is its ability to find infected ports."
  • "Security Onion is the most mature solution in the market."

Room for Improvement

  • "For Security Onion, setting up and configuring the system can be quite challenging for newcomers due to the need for a grasp of networking and security concepts."
  • "The initial setup of the solution is a little bit difficult."
  • "The product is not easy to learn."

Pricing

  • "Security Onion is an open-source solution."
  • "It is an open-source solution."
  • "Security Onion is a free solution."
These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.
Download our Log Management Buyer's Guide for additional reliable information.

Top industries

By visitors reading reviews
University
12%
Government
10%
Comms Service Provider
10%
Computer Software Company
7%
Construction Company
7%
Manufacturing Company
6%
Healthcare Company
6%
Educational Organization
5%
Financial Services Firm
4%
Outsourcing Company
4%
Retailer
3%
Media Company
3%
Real Estate/Law Firm
2%
Hospitality Company
2%
Insurance Company
2%
Aerospace/Defense Firm
2%
Wholesaler/Distributor
2%
Legal Firm
2%
Energy/Utilities Company
2%
Transportation Company
2%
Non Profit
2%
Performing Arts
1%
Recreational Facilities/Services Company
1%
Consumer Goods Company
1%
Security Firm
1%
Pharma/Biotech Company
1%

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Learn more about Security Onion

Security Onion provides a full suite of tools to detect and respond to cybersecurity threats efficiently. As a robust and versatile distribution, it includes capabilities for real-time analysis, network visibility, and threat detection, making it indispensable for security operations centers. Users value this tool for its integration of open-source software with advanced analytics, affording professionals a detailed overview of network traffic and potential intrusions.

What are Security Onion’s most important features?

  • Intrusion Detection: Utilizes Suricata or Zeek for effective threat monitoring.
  • Network Security Monitoring: Offers powerful visualization tools for network analysis.
  • Log Management: Centralizes log collection and analysis.
  • Comprehensive Dashboards: Provides integrated dashboards for threat visibility.

What benefits or ROI should you look for in reviews?

  • Cost Efficiency: Reduced cybersecurity costs due to its open-source nature.
  • Improved Threat Detection: Enhanced ability to identify and respond to threats quickly.
  • Integration Capability: Seamless integration with existing security infrastructures.
  • Scalability: Support for scaling network security operations as needed.

Security Onion finds extensive application in industries such as finance, healthcare, and government sectors, where robust network monitoring is critical. Its ability to integrate with existing security tools makes it a preferred choice for organizations looking to strengthen their cybersecurity posture.

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Product Categories

Product Categories
Log Management

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Security Onion Reviews Summary
Author infoRatingReview Summary
Manager at teshama3.0I use Security Onion for centralized log visualization and intrusion detection, which greatly improved our security posture and offered significant ROI. While setup can be challenging due to technical demands, its cost-effectiveness, stability, and scalability make it a highly valuable tool.
Scientist at a educational organization with 10,001+ employees5.0I use Security Onion for learning and demonstrating security concepts. It's a mature, easy-to-install open-source solution. While setup is easy, learning it takes time, and deploying it in industrial environments presents data acquisition challenges.
Cyber Security Officer at AFC Holdings3.0We use Security Onion for vulnerability assessment. It's free and generally stable, but I find the UI, reporting, and setup need improvement. Scalability and API integration can be difficult, requiring skilled users. Overall, I rate it 6/10.
Postgraduate at a educational organization with 1,001-5,000 employees3.5I've used Security Onion for a year, finding its port infection detection and Squert useful, despite a slightly difficult initial setup. It's a free, open-source solution with good support, which I recommend, rating it seven out of ten.