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
They mostly response on time. Well trained dispatchers and team. They are helpful in solving any problem.
trustpilot
the team very helpful and nice with everybody

pay on time

quality work
trustpilot
Finding service and also communication with Protos clients relations
trustpilot
I had a great experience working with Protos Security. Their team was professional, responsive, and easy to communicate with throughout the entire process. They handled everything efficiently and made me feel confident that security was their top priority. I especially appreciated their quick response times and attention to detail. Overall, Protos Security provided reliable service and excellent customer support. I would definitely recommend them to anyone looking for dependable security solutions.
trustpilot
Easy company to work for, quick pay, only complaint is their geofencing/check in and out and how they rate you.
trustpilot
My experience is good the only problem that i have is when we do a site we can't get the app to work and when we call in we have a hard time trying to get it straight.
trustpilot
We have been working with Protos for the last ten years. Our experience with Protos was amazing. Their professionalism is the key. They have been very cooperative and prompt in their service. Hard to find a company like this.
trustpilot
The best security company in the area! Love to be part of this company!

Patriot Protection Services

Shams
trustpilot
Protos IVR Technology is the best we work it and Punch report and vendor portal is very user friendly
trustpilot
Amazing Company very Professional Honor to be in Partnership with a Top Notch Company
trustpilot
Protos is always very professional and easy to work with. We truly value our partnership with them.
trustpilot
Vigilance Protection Services, LLC has had a very positive experience working in partnership with Protos Security. Their team has been professional, responsive, and organized throughout the vendor onboarding and service coordination process. Protos provides clear communication, detailed post expectations, and a structured platform that allows security providers to properly manage assignments, reporting, and client expectations.

As a private security agency, we value partnerships that are built on accountability, professionalism, and mutual respect. Protos Security has demonstrated those qualities by working with us to ensure service requirements are clearly communicated and that both the client and vendor are supported properly.

We appreciate the opportunity to partner with Protos Security and look forward to continuing a strong working relationship. I would recommend Protos to security vendors and clients looking for a company that values communication, structure, and reliable service delivery.
trustpilot
Protos Security has giving us time to build ourselves. Great opportunities to expand small businesses and expedite professional performance for various clients. Thanks Protos Security.
trustpilot
The representative was professional
trustpilot
Has helped out my company tremendously. I hope we can keep on working together to build stronger relationships.
trustpilot
Protos is an absolute pleasure to work with, the rates are good and the work is consistent. Also, the work orders themselves are thorough and provide the information we typically need.

If I were to make a suggestion it would be for the dispatchers to call while also sending an email whenever new jobs are available. This way we will know right away and have the information we need to send over to other managers/supervisors.

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.