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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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This article explains why many houses of worship are reevaluating their security approach as threats become more targeted and severe. It highlights how off-duty law enforcement provides a higher level of deterrence, authority and situational awareness compared to traditional or volunteer-based security models.
Protos recently attended ISC West 2026. While we were there, we noticed a shift in the security industry, where AI is no longer a differentiator but an expectation, and the focus is now on real-world results, not just features. Read our full article by Katie Irvine, Director of Product Marketing, to learn more about the latest trends we saw at the show.
Featured in a recent CFO.com article, Protos Security CFO Tony Escamilla highlights how modern succession planning goes beyond simply filling roles. By rotating employees through different finance functions, he emphasizes building well-rounded, engaged team members who are constantly learning and less likely to leave. Learn more in the full interview.
At ISC West 2026, SecurityInfoWatch interviewed Protos Security CEO Mark Hjelle, focusing on how organizations are managing contract security programs and coordinating guarding services across multiple locations.
Long plagued by inconsistency, opacity and sluggish response times, the traditional contract-guarding model is under pressure. Protos Security is betting that a software-driven, network-based approach, fueled by data, integration and cultural alignment, can deliver the accountability and agility enterprise clients have long demanded.
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.
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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.