Security Blog

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

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

Our Latest Article

Construction sites are vulnerable environments as valuable equipment and materials are often left unattended in open areas, shielded only by fences or minimal surveillance. These conditions make sites easy targets for both opportunistic and calculated theft, not to mention vandalism and, in some cases, protest activity.

Relying on reactive security measures is no longer enough – proactive executive protection is critical to safeguarding lives, assets and reputations. This article explores when it’s time to invest in executive protection services and how to choose the right support.
As threats targeting high-level executives continue to rise, executive protection is no longer optional – it’s a strategic necessity. This guide outlines 10 key factors to evaluate when selecting a partner for executive security services—so you can make a confident, informed decision that protects your people and your reputation.
As a trusted provider of executive protection services, Protos understands that it isn’t just about bodyguards; it’s about creating a seamless safety ecosystem around the client. But what sets elite security services apart from regular services? Let’s take a look.
We’re proud to share a major milestone in our ongoing commitment to safeguarding client data and meeting the highest standards in data security: Protos has successfully achieved SOC 2 Type II compliance.
Executive protection services are no longer a luxury – they’re a necessity. As threats evolve, more executives, celebrities and high-profile individuals rely on trusted executive protection companies to safeguard their lives, reputations and operations. But what exactly is executive protection, and why should companies and executives take it seriously?
The security industry has long been defined by boots-on-the-ground execution, but in 2025, it’s apparent: software and technology are reshaping everything. This year at ISC West 2025, Protos made it clear we’re not just keeping up – we’re leading through our integrated protection solution.
Financial institutions, such as banks, credit unions and investment firms, provide essential services, including savings and checking accounts, loans, mortgages, investment opportunities and financial advice. In this blog, we will discuss the various measures to protect assets, employees and customers in financial security operations.
Workplace security not only safeguards assets and sensitive information but also protects employees and visitors, fostering a safe and productive environment. Off-duty law enforcement are an effective solution as they are positioned to deter criminal activities, respond swiftly in emergencies and provide an added layer of protection.
Every year, commercial properties lose millions to theft and vandalism. But what if a single security measure could drastically reduce these risks? In this blog, we will discuss how off-duty law enforcement contributes to the safety of commercial property management.
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.