Proven Security. Real Experiences.
Trusted Results.

At Protos, we strive to deliver measurable impact and unmatched service. From Fortune 500 companies to local businesses, our clients count on us for consistent, responsive and professional security services. Check out the reviews below to discover how we’ve delivered peace of mind and operational excellence to clients across North America.

trustpilot
PROTOS!!!

It doesn’t get any better than this! Great partnership that puts their vendors first!!
trustpilot
Very professional and easy to work with
trustpilot
Universal Security Training Academy

We sincerely appreciate the opportunity to partner with Protos Security and want to thank your entire team for your professionalism, communication, and support. It has been a pleasure working together, and we value the trust you have placed in Universal Security. Your commitment to quality service and strong client relationships makes Protos an outstanding company to work with.

We look forward to continuing to build our partnership by providing dependable, professional security services throughout Shelby County, Tennessee. Our team is committed to delivering highly trained, customer focused security officers who represent both of our organizations with integrity, professionalism, and excellence. We are excited about future opportunities to expand our services and continue exceeding expectations for your clients.

As we move forward, we are also enthusiastic about supporting off-duty law enforcement security assignments whenever opportunities arise. We believe our combined experience and shared commitment to safety will continue to strengthen our partnership for years to come. Thank you again for your confidence in Universal Security. We truly appreciate the relationship and look forward to many more successful projects together. Ofc. James
trustpilot
Great service and super guys and gals in dispatch
trustpilot
Quality people, professionalism unmatched, stable work detail. Great communication
trustpilot
Taking care of everything in a good time and right way.
trustpilot
professional of the officers assigned
trustpilot
We are very satisfied with this company.

Thank you.
trustpilot
Very accurate information about services
trustpilot
My experience has gotten even better with working with you guys because you all makes things better for the subcontractors by making all processes better.
trustpilot
Working with protos company has beena positive experience in overall
trustpilot
Protos has helped My company grow and giving us the experience to keep succeeding.
I would recommend this company.
trustpilot
Protos has always been a patient company in our past experience, allowing vendors to grow and expand. We appreciate Protos Security. Thank you very much.
trustpilot
We appreciate the opportunity to partner with Protos Security as a vendor. Their team is professional, responsive, and committed to maintaining clear communication with their security partners. The onboarding process, dispatch support, and overall coordination have been well organized, making it easier to provide quality service to clients.

The Protos team is respectful and works collaboratively to address operational needs and resolve issues when they arise. We value the relationship and look forward to continuing our partnership while supporting their clients with reliable and professional security services.
trustpilot
Friendly interactions with Associates
trustpilot
Protos are a great partner who are reliable and honest. I would highly recommend Protos for security work and beyond!

Showing our 4 & 5 star reviews

Protos
Headquarters

383 Main Ave, Suite 505
Norwalk, CT 06851, USA
Phone: 203.941.4700

Protos
Headquarters

383 Main Ave, Suite 505
Norwalk, CT 06851, USA
Phone: 203.941.4700

Mark Hjelle

Chief Executive Officer

Mark Hjelle is the CEO of Security Services Holdings, LLC as well as Protos Security and its subsidiaries. Mark is an experienced Chief Executive Officer and Board Member who has led large national business and facilities services firms for nearly 25 years delivering strong top- and bottom-line growth while building high-performing teams with strong culture. Most recently, he was CEO for CSC ServiceWorks, a B2B2C provider of technology-enabled consumer services. Prior to CSC, Mark was President of Brickman/Valleycrest a national provider of exterior landscape and snow removal services. Over the course of his 18-year tenure at Brickman, he held numerous leadership positions in operations, finance and business development. Mark holds a Bachelor of Science degree in Economics from The Wharton School of Business, University of Pennsylvania, a Master of Government Administration from the University of Pennsylvania Fels Institute of Government and a Law Degree from Case Western Reserve School of Law.