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
Great communication
Outstanding customer service
Prompt response when requested emails
Knowledge on customer care support team
trustpilot
My interactions with the despatch team are always very interesting and helpful each i need their assistance.
trustpilot
Karla as always was awesome, prompt courteous and helpful 5 stars to her.
trustpilot
24hrs great dispatch and service experience
Prompt payment
trustpilot
We have been a part of the Protos team for many years. Protos is organized, professional and responsive. It is always a pleasure working with Protos Security and would highly recommend them. They always take care of their clients as well as their vendor partners. To the entire Protos Security team we thank you for the many years and we look forward to continuing our strong partnership for many more years. Thank you
Guard Response Private Security
trustpilot
I think we should be able to give officers opportunity to evaluate too
trustpilot
Dispatcher, please have them communicated. It becomes time-consuming when you have to explain the same thing you already told the previous dispatcher.
trustpilot
Protos build good partnerships
trustpilot
We have been partnering with Protos Security for some time now, and our experience over this period has been exceptional. They consistently provide high-quality services and are incredibly proactive in their approach to security management. Working with them has been seamless, and they have proven to be a highly reliable partner. Highly recommended from the team at KO PRIME SECURITY SERVICES!
trustpilot
This is a great company to partner with they have made the pay process better the apps better and the onsite website.
trustpilot
Protos Security has played a significant role in helping our company grow by providing opportunities, support, and access to valuable security contracts. Their partnership has contributed to our continued development and success as a security service provider
Thank you 🙏🏽
trustpilot
This company doing very well for us.

trustpilot
Best thing about Protos for me is the knowledge they give to make sure you know your post orders and what amount to expect from different sites. Richard Cueba is always giving me something new to learn about and always trying to help us grow as a company in any way he can from recommending us for assignments to helping us connect with the Protos vendors.
trustpilot
So many guard sites require a check.Every hour, but it's so busy with the shoplifting.And panhandlers, that it's very hard to do that sign in check every hour
trustpilot
Working with Protos security has been a positive experience,communication is clear,management is professional,payments have been timely.I appreciate the company's commitment to maintaining high security standards and creating a supportive work enviroment.
trustpilot
I would like to express our appreciation for Protos Security as a valued vendor partner. Throughout our collaboration, the Protos team has demonstrated professionalism, responsiveness, and a strong commitment to supporting their clients’ security needs. Their communication is timely, expectations are clearly outlined, and they work diligently to ensure services are delivered efficiently.

We have found Protos Security to be reliable and organized in coordinating security operations, and their team is always willing to assist in resolving issues promptly when they arise. Their dedication to maintaining high service standards has helped foster a productive and positive working relationship.

We look forward to continuing our partnership with Protos Security and appreciate their ongoing support and professionalism.

Best regards
Guard for America

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.