Once again, DSS has been ranked among the largest security services providers in a widely respected industry publication.
Our company is listed as one of “Leading Security Guard Companies in North America,” according to the recently released 2026 Security Letter.
This marks the fifth consecutive year that DSS has been included in the annual listing. “DSS is proud to be included alongside so many distinguished security services providers,” commented DSS President and CEO Mario J. Doyle, CPP. “Our company’s continued success is the result of remaining true to our founding principles of investing in our employees, exceeding customer expectations, and giving back to the communities we serve.”
Security services providers on the Security Letter list generate revenue from security operations in the United States and Canada. Companies included in the list posted 2025 annual North American revenues ranging from $25 million to more than $13.7 billion. The smallest provider on this year’s list has 612 employees deployed across the U.S. and Canada, compared to 320,000 for the largest.
Robert McCrie, the former editor of Security Letter magazine, issued the annual Security Letter for more than two decades. Recent issues are produced in collaboration with the late Keith Oringer, President of Security Pro Advisors, a legend in the security industry who passed away last year. Security Pro Advisors compiled this year’s edition.
Security List has been praised as a “benchmark document that puts the security industry into perspective.”
Over the past five years, DSS has grown at an industry-leading pace. Our partners include scores of high-profile clients, including leading universities, global media giants, major financial institutions, and international manufacturing companies.
DSS is the gold standard for service delivery and customer satisfaction in the security services industry. Unlike many competitors that grow revenue through acquisitions,
DSS attracts new customers by delivering the highest levels of service, flexibility, and client satisfaction. We thank all DSS team members for their unending dedication and hard work, and our clients for their continued loyalty, which drives our continued success!
