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
The opportunity to work and be a success for our company and the Protos Team means a great experience. You all work hard to get us the jobs and we work hard to fill them with professional guards who do what they are payed do. Protos has a great way to check and balance the clients expectations by keeping all of us honest and that's what we preach to our wonderful guards who we check on as well every hour that we work.
trustpilot
Protose Security is the Best in the Business. Love being a valued partner with the organization, looking forward to many more excellent years of services
trustpilot
Accounting services top notch....
trustpilot
There was an issue on clocking in, but it was quickly resolved
trustpilot
Great company, nice reliable agents and dispatch makes everyth8ng run smooth for contractors.
trustpilot
Jon was super helpful and was very patient with me while on the phone.
trustpilot
WPSS has been a part of the Protos Team since 2017. It has been a pleasure working as a team.
trustpilot
Professional & straight to the point.
trustpilot
They make it very clear on what is expected of the company when they take an assignment. They answer every question in a timely manner. Very easy to deal with. 10/10
trustpilot
Well Organized, coordinated and very articulate company
trustpilot
We are located across the state of TN, and we are only utilized in Memphis.
trustpilot
The people at Protos are great.
Very helpful.

trustpilot
I had a great meeting with Protos Security
trustpilot
Universal Security training academy has a great partnership with Protos as we work as a team we are number 1 together.
trustpilot
Protos is a great organization to work with. They are very professional and always go above and beyond for their vendors. I highly recommend Protos to any potential vendor or new client.
trustpilot
Perfect communication and respond

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.