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
G4A Security Services appreciates the opportunity to work with Protos Security as a vendor partner. Overall, our experience with Protos has been positive, and we value the business relationship and opportunities they provide to our company.

Communication:
Protos has generally maintained professional and effective communication with our team. Their staff is responsive when we need assistance with work orders, scheduling, or operational questions. Continued improvement in communication regarding last-minute changes and site-specific requirements would make the process even more efficient.

Work Order Management:
The Protos platform provides a structured process for receiving and managing work orders. It helps our operations team keep track of assignments and ensure that coverage is arranged appropriately. Clear and timely updates are especially helpful when there are changes to coverage requirements.

Invoicing and Payment:
The invoicing process is generally organized and straightforward. We appreciate having a defined process for submitting invoices and resolving payment-related questions. Prompt communication regarding invoice discrepancies or disputed hours helps us resolve issues quickly.

Operations and Support:
Protos provides valuable support in coordinating security services between clients and security vendors. We appreciate the opportunity to provide coverage through the Protos network and the professional approach of their team.

Overall:
G4A Security Services considers Protos Security a valued business partner. We appreciate the professionalism of their team, the opportunities they provide, and their structured approach to managing security services. We look forward to continuing our partnership and strengthening communication and coordination to provide the highest level of service to Protos clients.
G4A Team
Review from Trustpilot
Professionalism, Customer Service, Knowledgeable Staff, and timely accounts payable.
Review from Trustpilot
B&G Security has worked with Protose for over 15 years, and it has been a rewarding experience. We highly recommend this company for any contracts, large or small
Review from Trustpilot
Customer service was great. The message was very clear, easy to understand and professional tone.
It will be appreciated more if we can get more business.
Review from Trustpilot
The simple thing with the app
Review from Trustpilot
An exceptional company to work with. Very professional and great customer service.
Review from Trustpilot
At KO Prime Security Services, working with Protos Security as a vendor partner has been an exceptional experience. Their team is consistently organized, highly communicative, and dedicated to clear, transparent operations. Protos makes the administrative and scheduling process seamless through their platform, allowing us to focus on what we do best—providing top-tier, reliable security coverage. Their dispatch and support personnel are always available, professional, and quick to assist whenever questions or dispatch adjustments arise. We highly value our strategic partnership with Protos Security and look forward to continuing our work together. If you're a vendor or client looking for a responsive, modern security management partner, Protos is top of the line.
Review from Trustpilot
WE have chance to navigate time sheet and able to communicate with the Dispatch.
Review from Trustpilot
Helpful staff and quickrespond
Review from Trustpilot
Very nice to work with feels like family instead of just co workers
Review from Trustpilot
We are very happy with Protos
Good expert are helping us to grow our business.
Review from Trustpilot
The commitment of the company employees they make to foster a positive relationship with the vendor!
Review from Trustpilot
Dispatch is always good to help you out in any situation that you have working with Protos.
Review from Trustpilot
Protos Security, is well structure, for better services.
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

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.