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.

Review from Trustpilot
Good Services to company at. the right time without delay. Thanks you.
Review from Trustpilot
Exceptional and wonderful Company we truly appreciate and Value our partnership and looking forward to many future opportunities
Review from Trustpilot
We just love working for the company
Review from Trustpilot
Today was easy to contact dispatch and be connected to fulfillment team.
Review from Trustpilot
They pay on time , and the platform is easy to use.
Review from Trustpilot
Excellent Communication. Jon Rozas is very professional. Jennifer Wickham and William Batiz
Review from Trustpilot
Great Company!! Very professional
Review from Trustpilot
Everyone is very helpful during our transition
Review from Trustpilot
I met with our VRM representative approximately every 60 days for a quarterly review. During this review, we are given performance metrics, what we are doing well, and shown where we are needing improvement, if any. This information is always clear, concise and delivered gracefully, and factually. This is a professional meeting, but a meeting that always feels intimate in the way of a true valued partnership, a true relationship. Often security can feel unappreciated from a public perspective. Never has 3JS Security left with a feeling of being underappreciated or under valued by our Protos family. This doesn't mean there hasn't been times of frustration (rarely) experienced in the nearly 5 years of partnership from either 3JS or Protos as frustration in business is normal and expected at times. However, it's the way Protos handles, listens, accesses, evaluates and reacts to our concerns that is of the most value. That is a truly valued partnership! Our designated site Protos Service Agents,Senior Service Agents and Account Managers are very responsive and place an immense amount of trust in 3JS which means a lot to us. We too trust the Protos service department immensely. Our daily and regular interactions with Protos is extremely positive across all departments. Protos is often and highly recommended by 3JS to other Security Providers looking for strong partnerships within the industry.
Review from Trustpilot
Great working relationship! Love them!
Review from Trustpilot
Great company and wonderful experience
Review from Trustpilot
GREAT COMPANY TO WORK WITH. WE ARE VERY HAPPY.THANK YOU.
Review from Trustpilot
good business relationship and great company to work with
Review from Trustpilot
We are a sub vendor and they have been great to work with.
Review from Trustpilot
Great Services,
Protos Security has been professional and supportive. Communication is excellent, and payments are on time. The team is respectful and helpful whenever assistance is needed. I enjoy working with them and would recommend them to others.
Review from Trustpilot
Always ready to help whenever help is requested. Associates are always available to assist vendors
in training on protos applications.

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.