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Knowledge Hub

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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Security outcomes are shaped not only by coverage and data but by the psychology of safety, how employees and customers perceive their environment, the credibility of the security presence and the quality of interactions during tense situations. Read our full blog series about the psychology of safety in workplaces and communities.
In a recent interview with Security Sales & Integration, Protos CEO Mark Hjelle shares the best advice he’s ever gotten, offers tips for those who are looking to move up in the security industry and points to his career inspiration. Read the full interview to learn how Mark approaches leadership, innovation and growth in the security industry.
Houses of worship face a unique challenge: how to stay open and welcoming while addressing real security threats. This article explores why traditional approaches often fall short and how off-duty law enforcement offers a more balanced solution, combining behavioral expertise with community familiarity.
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.
Security outcomes are shaped not only by coverage and data but by the psychology of safety, how employees and customers perceive their environment, the credibility of the security presence and the quality of interactions during tense situations. Read our full blog series about the psychology of safety in workplaces and communities.
Unsafe workplaces carry a hidden psychological cost that drives employee fear at work, disengagement and turnover long before a major incident occurs. This blog article explores how the perception of workplace safety, shaped by visible, capable security presence, directly influences whether employees feel safe at work, trust leadership and stay focused on their jobs.
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.
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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.