WITH INTELLIGENCE, COMES SECURITY ℠
ISI brings experience built for real-world threats
Welcome to ISI
At ISI, we help organizations identify risk, strengthen security, and prepare for the threats that matter most.
Our team brings deep, real-world security expertise and a proven track record working across industries and complex environments. We don't believe in one-size-fits-all solutions. We work closely with each client to understand their unique risks, challenges, and objectives—and develop practical strategies designed to protect people, property, and operations.
From security assessments and threat analysis to strategic planning, technology optimization, and comprehensive security management, ISI delivers the insight and solutions needed to move from simply reacting to threats to being prepared for them.
Our mission is simple: understand the risk, build the strategy, and deliver security solutions that work.
Contact Us Today
Ready to take your security program to the next level? Contact us today to learn more about our consulting services and how we can help you achieve your goals.
About ISI
About ISI
Our Mission
Our Mission
Experience That Delivers. Security That Performs.
With decades of hands-on experience, ISI brings a depth of knowledge to the design, implementation, and management of integrated security programs that few firms can match.
Our leadership team has worked on both sides of the security equation—as clients responsible for protecting people and
Experience That Delivers. Security That Performs.
With decades of hands-on experience, ISI brings a depth of knowledge to the design, implementation, and management of integrated security programs that few firms can match.
Our leadership team has worked on both sides of the security equation—as clients responsible for protecting people and operations, and as providers responsible for delivering the solutions. That perspective gives us something different: an owner’s mindset focused on what works, what delivers value, and what makes financial sense.
We don't simply recommend solutions—we help you build smarter security programs that align with your risks, objectives, budget, and timeline.
At ISI, we work alongside you to identify vulnerabilities, prioritize investments, control costs, and deliver Value Solutions that provide meaningful protection without unnecessary expense.
We become an extension of your team and a trusted Strategic Security Partner, focused on one objective:
Delivering the right security solution, at the right investment, for the right outcome.
Our Mission
Our Mission
Our Mission
At ISI, our mission is to make organizations safer, stronger, and better prepared for the threats they face.
We combine decades of real-world experience across physical security, contract security, technology, and investigations to develop intelligent, proactive security strategies built around each client’s unique needs.
We don't believe
At ISI, our mission is to make organizations safer, stronger, and better prepared for the threats they face.
We combine decades of real-world experience across physical security, contract security, technology, and investigations to develop intelligent, proactive security strategies built around each client’s unique needs.
We don't believe in cookie-cutter security. We believe in understanding the risk, challenging conventional thinking, and delivering solutions that work—protecting people, assets, operations, and the communities we serve.
Our commitment is simple: bring experience, integrity, and innovation to every engagement, while delivering measurable security and lasting value.
ISI — Security with Purpose. Experience with Results.
Our Founder
Our Mission
Our Founder
In 2009, David Cullen founded Intelligence Security International (ISI), Inc. following a distinguished career spanning corporate security, contract security, and security technology.
Throughout his career, David has led and managed complex security operations across physical security, investigations, security technology, travel security,
In 2009, David Cullen founded Intelligence Security International (ISI), Inc. following a distinguished career spanning corporate security, contract security, and security technology.
Throughout his career, David has led and managed complex security operations across physical security, investigations, security technology, travel security, and executive protection. This breadth of experience has given him a unique understanding of security—not simply from a consultant’s perspective, but from the perspective of someone who has been responsible for protecting people, assets, and operations.
David’s greatest differentiator is his experience on both sides of the security equation—as a client responsible for security outcomes and as a strategic service partner responsible for delivering them. That perspective drives ISI’s practical, results-focused approach: understand the risk, challenge the status quo, and deliver solutions that work.
Beyond his professional career, David is deeply committed to giving back. He actively supports charitable and nonprofit organizations, reflecting a personal commitment to strengthening not only the organizations ISI serves, but the communities they call home.
Security Offerings
Security Consulting
Security Consulting
Security Consulting
The ISI team offers expert analysis to enhance your security posture, ensure compliance, and optimize operational efficiency. With extensive experience in consulting, investigations, security systems and training, our security professionals assess risks and implement effective controls to strengthen your protection.
We are product-agnostic, providing recommendations based solely on your organization’s needs and existing infrastructure. Our focus is on leveraging technology to enhance the effectiveness and efficiency of your security program.
We take the time to understand and embrace your business’s unique climate and culture, ensuring that our solutions align with your environment. Our approach balances the mission of the project with respect for the nuances of your organizational culture.
Areas we can discuss:
- Security Surveys
- Security Technology Reviews
- Guard Services Reviews
- Mass Notification/Emergency Duress System Design
- Disaster Recovery Programs
- Data Center Security Design/Review
- Global Security Operations Center (GSOC) Design/Review
- Crime Prevention through Environmental Design (CPTED)
- Compliance & Audits
Risk Assessments
Security Consulting
Security Consulting
The ISI team offers expert analysis to strengthen your security posture, ensure compliance, and enhance operational efficiency. With extensive experience in consulting and training, our security professionals assess risks and implement effective controls to protect your organization.
With deep experience in physical security consulting, system technologies, contract security, and security program training, we provide tailored solutions to meet your needs. Through strategic partnerships with top security consultants nationwide, we offer an all-in-one resource, allowing us to scale efficiently for projects of any size.
We offer a comprehensive security assessment roadmap designed to evaluate and future-proof physical security and safety programs. This process takes advantage of a collaborative approach, blending our physical security consulting expertise with a robust network of security integrators, seasoned manufacturers, service providers, and software developers to deliver tailored solutions for our clients.
Some of the areas we support are businesses across various industries, including K-12 and higher education, healthcare, government, financial institutions, pharmaceuticals, biotech, manufacturing, utilities, cannabis, warehousing, and distribution.
Training
Security System Design & Project Management
Security System Design & Project Management
Our training methods instill a deep understanding of security on a personal level, ensuring employees apply the same vigilance and mindset at work. Employee awareness is the cornerstone of a comprehensive security program, and ISI provides an outsourced solution to meet all your training needs.
SECURITY FOCUSED:
- Security Staff and Management Training
- Incident Report Writing
- Emergency Evacuation and Fire Safety Training
- Customer Service as a first line of prevention
- Travel Security and Executive Protection
- Active Shooter/Armed Intruder Table-Top Training
- Emergency Preparedness
NON-SECURITY FOCUSED:
- Protecting against Identity Theft and Social Networking
- Security Awareness for the Non-Security Professional
- Customer Service as a First line of Security
- De-escalation Training – Management of Aggressive Behavior (M.O.A.B.)
- Dealing with Workplace Violence
Security System Design & Project Management
Security System Design & Project Management
Security System Design & Project Management
Our services include comprehensive assessments and meticulous planning of security technologies tailored to your specific business needs. By working closely with your security and facilities teams, as well as architects and engineers, we deliver solutions that maximize the potential of existing technologies, enhancing their capabilities and increasing your return on investment.
Furthermore, we incorporate the latest technological advancements to protect your business cost-effectively. These services ensure that the appropriate technology solutions are implemented and designed to keep your project within budget while guaranteeing that security systems perform efficiently and reliably.
Our services encompass setting expectations, overseeing the scope of work, planning and scheduling, budget management, milestone tracking, providing regular project updates, system commissioning, training, and delivering final project outcomes.