Insights

Technological Innovation 3SI Security Systems leverages cutting-edge technologies such as Angular, JavaScript, and cloud-based tools like Cloudflare and MySQL, demonstrating a strong focus on advanced security solutions that can appeal to clients seeking integrated and modern security platforms.

Strategic Partnerships Recent collaborations with Netwatch Global and Rapid Response Monitoring Services highlight opportunities to expand joint offerings and enhance law enforcement capabilities, presenting avenues for cross-selling integrated security and intelligence solutions.

Market Expansion With a dedicated focus on law enforcement and community safety through innovative products like DirectToDispatch, the company is positioned to target public safety agencies and security organizations seeking real-time crime data and verified video intelligence.

Leadership Growth Recent executive appointments and strategic hires indicate a company investing in leadership that can drive growth, which might be attractive to investors or partners looking for stable and innovative security providers.

Financial Strength With revenues estimated between 50 million and 100 million dollars and recent funding of 13 million dollars, 3SI Security has the financial capacity to pursue new product development, strategic acquisitions, or geographic expansion efforts.

3Si Tech Stack

3Si uses 8 technology products and services including yepnope.js, Chart.js, Swiper, and more. Explore 3Si's tech stack below.

  • yepnope.js
    Javascript Frameworks
  • Chart.js
    Javascript Graphics
  • Swiper
    Javascript Libraries
  • HubSpot
    Marketing Automation
  • Java
    Programming Languages
  • Android
    Programming Languages
  • ZURB Foundation
    UI Frameworks
  • ShareThis
    Widgets

Media & News

3Si's Email Address Formats

3Si uses at least 1 format(s):
3Si Email FormatsExamplePercentage
First_Last@3sisecurity.comJohn_Doe@3sisecurity.com
82%
FLast@3sisecurity.comJDoe@3sisecurity.com
14%
First@3sisecurity.comJohn@3sisecurity.com
3%
FirstLast@3sisecurity.comJohnDoe@3sisecurity.com
1%

Frequently Asked Questions

Where is 3Si's headquarters located?

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3Si's main headquarters is located at 101 Lindenwood Drive Suite 200 Malvern, Pennsylvania 19355 United States. The company has employees across 5 continents, including North AmericaEuropeAsia.

What is 3Si's phone number?

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You can contact 3Si's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is 3Si's stock symbol?

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3Si is a publicly traded company; the company's stock symbol is 3SIS.L.

What is 3Si's official website and social media links?

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3Si's official website is 3sisecurity.com and has social profiles on LinkedInCrunchbase.

How much revenue does 3Si generate?

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As of March 2026, 3Si's annual revenue is estimated to be $6M.

What is 3Si's SIC code NAICS code?

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3Si's SIC code is 5063 - Electrical Apparatus and Equipment Wiring Supplies, and Construction Materials NAICS code is 5616 - Investigation and Security Services.

How many employees does 3Si have currently?

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As of March 2026, 3Si has approximately 337 employees across 5 continents, including North AmericaEuropeAsia. Key team members include Chief Revenue Officer: M. C.Vp Of Revenue Operations: R. L.Vice President Of Revenue Operations: D. J.. Explore 3Si's employee directory with LeadIQ.

What industry does 3Si belong to?

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3Si operates in the Security and Investigations industry.

What technology does 3Si use?

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3Si's tech stack includes yepnope.jsChart.jsSwiperHubSpotJavaAndroidZURB FoundationShareThis.

What is 3Si's email format?

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3Si's email format typically follows the pattern of First_Last@3sisecurity.com. Find more 3Si email formats with LeadIQ.

How much funding has 3Si raised to date?

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As of March 2026, 3Si has raised $13M in funding. The last funding round occurred on Jul 29, 2002 for $13M.

When was 3Si founded?

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3Si was founded in 1971.

3Si

Security and InvestigationsPennsylvania, United States201-500 Employees

Redefined Actionable Intelligence: With a fresh new look and a revolutionary purpose and mission, we are positioned to better serve our clients, partners, law enforcement, and communities with our cutting-edge technologies and real-world experience to deliver redefined actionable intelligence via an integrated platform that significantly impacts the bottom line – and, more importantly, lives. 

The Power of 3: At the core of the new 3Si is the Power of 3 — a comprehensive suite of solutions designed to deliver on the company’s promise of getting the Right Data to the Right People at the Right Time to contribute to a Safer World.

Section iconCompany Overview

Headquarters
101 Lindenwood Drive Suite 200 Malvern, Pennsylvania 19355 United States
Phone number
SIC Code
5063 - Electrical Apparatus and Equipment Wiring Supplies, and Construction Materials
Stock Symbol
3SIS.L
NAICS Code
5616 - Investigation and Security Services
Founded
1971
Employees
201-500

Section iconFunding & Financials

  • $13M

    3Si has raised a total of $13M of funding over 1 rounds. Their latest funding round was raised on Jul 29, 2002 in the amount of $13M.

  • $50M$100M

    3Si's revenue is estimated to be in the range of $50M$100M

Section iconFunding & Financials

  • $13M

    3Si has raised a total of $13M of funding over 1 rounds. Their latest funding round was raised on Jul 29, 2002 in the amount of $13M.

  • $50M$100M

    3Si's revenue is estimated to be in the range of $50M$100M

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