Insights

Established Market Presence GMSC Security has over 30 years of experience providing high-quality security services to large commercial clients in major urban markets like New York and Chicago, indicating a strong reputation and potential for expanding enterprise contracts.

Diverse Service Portfolio The company's comprehensive offerings, including fire and life safety, systems integration, 24/7 monitoring, and consulting, present multiple cross-selling opportunities within existing client accounts and attract prospects seeking integrated security solutions.

High-Profile Clientele Securing over 25 million square feet for Fortune 100 firms such as Amazon, Facebook, and Bloomberg highlights GMSC’s capability to serve high-value, complex security needs and positions it to target similarly large organizations.

Technology Integration Focus Utilizing modern tools like PHP, Yoast SEO, and online engagement strategies indicates an openness to leveraging technology for client engagement and operational efficiency, offering potential avenues for technology-enabled security innovations.

Partnership and Event Experience Recent partnerships with organizations like GCJ Management and collaboration with emergency services demonstrate GMSC's ability to handle large-scale events and crises, opening sales opportunities in event security and emergency preparedness sectors.

GMSC Security Tech Stack

GMSC Security uses 8 technology products and services including W3 Total Cache, jsDelivr, Slick, and more. Explore GMSC Security's tech stack below.

  • W3 Total Cache
    Caching
  • jsDelivr
    Content Delivery Network
  • Slick
    Javascript Libraries
  • Gentoo
    Operating Systems
  • PHP
    Programming Languages
  • Lua
    Programming Languages
  • Bootstrap
    UI Frameworks
  • Contact Form 7
    Web Platform Extensions

GMSC Security's Email Address Formats

GMSC Security uses at least 1 format(s):
GMSC Security Email FormatsExamplePercentage
FLast@gmscsecurity.comJDoe@gmscsecurity.com
50%
FLast@gmscsecurity.comJDoe@gmscsecurity.com
50%

Frequently Asked Questions

Where is GMSC Security's headquarters located?

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GMSC Security's main headquarters is located at 11 Penn Plaza, New York, US. The company has employees across 2 continents, including North AmericaAfrica.

What is GMSC Security's phone number?

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You can contact GMSC Security'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 GMSC Security's official website and social media links?

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GMSC Security's official website is gmscsecurity.com and has social profiles on LinkedIn.

What is GMSC Security's NAICS code?

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GMSC Security's NAICS code is 5616 - Investigation and Security Services.

How many employees does GMSC Security have currently?

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As of October 2025, GMSC Security has approximately 501 employees across 2 continents, including North AmericaAfrica. Key team members include Vice President: A. F.Divisional Vice President - Operations: K. M.Director Of Field Services: O. R.. Explore GMSC Security's employee directory with LeadIQ.

What industry does GMSC Security belong to?

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GMSC Security operates in the Security and Investigations industry.

What technology does GMSC Security use?

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GMSC Security's tech stack includes W3 Total CachejsDelivrSlickGentooPHPLuaBootstrapContact Form 7.

What is GMSC Security's email format?

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GMSC Security's email format typically follows the pattern of FLast@gmscsecurity.com. Find more GMSC Security email formats with LeadIQ.

GMSC Security

Security and InvestigationsUnited States501-1000 Employees

For over 30 years GMSC has been securing high profile buildings and offices across New York and Chicago. We are a large volume company that provides a boutique service. Our services include:

> Fire/life safety
> Systems integration
> 24/7 monitoring
> Security consulting

We secure over 25 million square feet of commercial, retail and Fortune 100 companies, including IPG, Amazon, Facebook, Bloomberg, VNO, Manhattan Mall, Merchandise Mart, Rego Park Center and many more.

Section iconCompany Overview

Headquarters
11 Penn Plaza, New York, US
Phone number
NAICS Code
5616 - Investigation and Security Services
Employees
501-1000

Section iconFunding & Financials

  • $10M$25M

    GMSC Security's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    GMSC Security's revenue is estimated to be in the range of $10M$25M

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