This company has been acquired.
3SI Security Systems
www.3sisecurity.com (opens in new tab)About
Criminal case and legal technology solutions for law firms
Key facts
Status
Acquired
Founded
1971
Headquarters
Malvern, USA
Target market
Law Firms
Revenue model
Subscription, Services, and Licensing
Total funding
-
Company references
External references
Cite this entry
[1]Bluebook:Stanford Ctr. for Legal Informatics (CodeX), CodeX TechIndex: 3SI Security Systems, https://techindex.law.stanford.edu/companies/3si-security-systems (last visited September 21, 2026).
[2]APA:Stanford Center for Legal Informatics (CodeX). (n.d.). 3SI Security Systems. In CodeX TechIndex. Retrieved September 21, 2026, from https://techindex.law.stanford.edu/companies/3si-security-systems
[3]BibTeX:@misc{techindex_company_13150,
author = {{Stanford Center for Legal Informatics (CodeX)}},
title = {{CodeX TechIndex: 3SI Security Systems}},
howpublished = {CodeX TechIndex},
url = {https://techindex.law.stanford.edu/companies/3si-security-systems},
urldate = {2026-09-21}
}
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Entry maintained by Stanford CodeX. Last reviewed July 2026.