Insights

Regional Leader Established Chicagoland security leader with a long track record and broad client base across commercial, public utilities, residential communities, and campuses presents a stable entry point for Up-Sell and cross-sell security service enhancements, managed programs, and expansion into adjacent verticals.

Mid-Market Focus Mid-sized employer range (201-500 employees) and revenue in the 25M-50M band indicate appetite for scalable, cost-effective security programs. Opportunities exist to optimize total cost of ownership, introduce tiered service levels, and expand into multi-site contracts with standardized dashboards.

Recurring Revenue Longstanding client-centric approach and service benchmarking suggest potential to convert one-off projects into recurring managed security services, remote monitoring, and incident response retainers, increasing lifetime value per client.

Technology Enablement Active use of digital marketing and cloud infrastructure (AWS, AdTech, analytics tools) signals readiness to leverage tech-enabled security solutions, such as integrated access control, threat analytics, and client portal integrations for reporting and SLA transparency.

Strategic Partnerships Emphasis on client partnerships and honesty indicates strong potential for co-development of security programs with building management, utilities, and educational institutions, creating upsell paths for risk assessments, training, and compliance attestations.

Similar companies to Guardian Security Services, Inc.

Guardian Security Services, Inc. Tech Stack

Guardian Security Services, Inc. uses 8 technology products and services including AdRoll, Google Ads, LinkedIn Ads, and more. Explore Guardian Security Services, Inc.'s tech stack below.

Guardian Security Services, Inc.'s Email Address Formats

Guardian Security Services, Inc. uses at least 3 email formats:
Guardian Security Services, Inc. Email FormatsExamplePercentage
First@guardiansecurityinc.comJohn@guardiansecurityinc.com
78%
FLast@guardiansecurityinc.comJDoe@guardiansecurityinc.com
21%
Middle@guardiansecurityinc.comMichael@guardiansecurityinc.com
1%

Frequently Asked Questions

What is Guardian Security Services, Inc.'s official website and social media links?

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Guardian Security Services, Inc.'s official website is guardiansecurityinc.com and has social profiles on LinkedIn.

How much revenue does Guardian Security Services, Inc. generate?

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As of August 2026, Guardian Security Services, Inc.'s annual revenue is estimated to be $25M - $50M.

What is Guardian Security Services, Inc.'s SIC code and NAICS code?

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Guardian Security Services, Inc.'s SIC code is 4899 - Communications Services, Not Elsewhere Classified and NAICS code is 5616 - Investigation and Security Services.

How many employees does Guardian Security Services, Inc. have currently?

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As of August 2026, Guardian Security Services, Inc. has approximately 251 employees across 4 continents, including North America, Africa and Asia. Key team members include Managing Director: L. C. C. M. U., Treasurer: J. H. and Security Officer: A. A. Explore Guardian Security Services, Inc.'s employee directory with LeadIQ.

What industry does Guardian Security Services, Inc. belong to?

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Guardian Security Services, Inc. operates in the Security and Investigations industry.

What technology does Guardian Security Services, Inc. use?

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Guardian Security Services, Inc.'s tech stack includes AdRoll, Google Ads, LinkedIn Ads, Hotjar, Amazon Web Services, WordPress, StackAdapt and Shopify.

What is Guardian Security Services, Inc.'s email format?

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Guardian Security Services, Inc.'s email format typically follows the pattern of First@guardiansecurityinc.com. Find more Guardian Security Services, Inc. email formats with LeadIQ.

When was Guardian Security Services, Inc. founded?

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Guardian Security Services, Inc. was founded in 1975.
Guardian Security Services, Inc. logo

Guardian Security Services, Inc.

Security and InvestigationsIllinois, United States201-500 Employees

Guardian Security Services, Inc. is a locally owned security and investigations company based in Blue Island, Illinois. Founded in 1975 by its current management, it provides customized, cost-effective security programs to a broad mix of clients, including commercial properties, corporate headquarters, public utilities, residential communities, financial institutions, college campuses, and industrial and manufacturing facilities. The company serves the Chicagoland area with a focus on tailoring solutions to diverse security needs.

It emphasizes values such as employee integrity, client focus, long-term partnerships, and professionalism in its service delivery. The organization also benchmarks its services against industry leaders to continually raise performance standards.

Section iconCompany Overview

SIC Code
4899 - Communications Services, Not Elsewhere Classified
NAICS Code
5616 - Investigation and Security Services
Founded
1975
Employees
201-500

Section iconFunding & Financials

  • $25M - $50M

    Guardian Security Services, Inc.'s revenue is estimated to be in the range of $25M - $50M

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