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Stay informed with the latest trends, strategies and thought leadership articles in the world of security services. Protos’ knowledge hub delivers news and blog articles to help businesses and individuals safeguard what matters most.

Here you’ll find valuable resources to support your security goals.

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Peter Platten, Protos Security’s Chief Revenue Officer, was featured in a podcast by CEO Coaching International. During the podcast, Peter explains his four-move framework to grow fast in a private equity environment. From systems thinking to bold goal-setting, the episode dives into how leaders build organizations designed for exponential growth.
Security isn’t just about preventing incidents; it’s about how people perceive risk and safety in their daily environment. This article explores the psychology behind effective security and why employees’ ability to feel safe directly impacts behavior, performance and retention.
One-size-fits-all security programs fail because people judge safety by perception, not policy. Learn how psychology, environment and experience shape effective security outcomes in this article.
Protos marks its 20th anniversary this month, celebrating two decades of challenging the traditional guarding model and raising the standard for transparency, accountability and performance in the security industry.
Protos will be exhibiting at ISC West 2026 in Las Vegas. At the show, Protos marks its 20th anniversary with the debut of a new AI-driven operational agent designed to bring real-time visibility, automation and accountability to guarding and off-duty programs.
Protos was featured in a SecurityInfoWatch.com article authored by Kris Vece. The article challenges the outdated narrative that women in security are simply “breaking barriers.” Instead, it argues that women are actively reshaping and leading the modern security landscape at the enterprise level. It includes powerful stories from industry leaders Julie Fraser of Protos, Cathy Langley of Solink and Debbie Gaxiola-Maples of Salesforce.
In a recent CFO.com interview, Anthony Escamilla, CFO of Protos Security, discusses how the roles of finance and operations have increasingly converged, making the two functions essentially inseparable in today’s business environment.
One-size-fits-all security programs fail because people judge safety by perception, not policy. Learn how psychology, environment and experience shape effective security outcomes in this article.
Explore Protos’ connected security solutions and product ecosystem. This blog provides insight into how integrated technology delivers real-time visibility, accountability and smarter security management.
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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.