A breakdown of the 278 companies running Security Onion.
Top industries
Information technology and services130
Professional and business services43
Industrial and manufacturing17
Financial services16
Education and training12
Construction and building11
Government and public services11
Health and wellness4
No industry recorded: 7
Company size
1–1016 (6%)
11–5027 (10%)
51–25081 (31%)
251–50033 (13%)
501–1,00011 (4%)
1,001–5,00033 (13%)
5,001–10,00016 (6%)
10,001+43 (17%)
Share of companies with a recorded size, by employees.
No size recorded: 18
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Frequently asked questions
About the Security Onion data on this page.
How many companies use Security Onion?
Firmable holds confirmed Security Onion detections for 278 distinct companies, 31 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Security Onion?
Alaka`ina Foundation Family of Companies, Sauce Labs and JAARS Inc are among the most prominent in the current set.
What industries use Security Onion?
Information technology and services, professional and business services and industrial and manufacturing lead the set, across 19 industries in total.
What size companies use Security Onion?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Security Onion users based?
The United States, Canada, Australia and Indonesia account for most detections, across 13 countries.
How current is this data?
31 companies were confirmed in the last 90 days. Last detection 20 September 2026.
