Physical security has evolved into an enterprise-wide discipline, writes Jeffrey A. Slotnick, President at Setracon.
Global supply chains have become increasingly complex, operating across multiple jurisdictions, partners and risk environments while under constant pressure to deliver speed, transparency and resilience.
In this context, physical security is no longer a localized or facility-based function. It has evolved into an enterprise-wide discipline that must support the uninterrupted flow of goods from origin to end consumer.
The financial impacts of supply chain failure can amount to billions of dollars in losses.
Security risks within supply chains are rarely isolated. Cargo theft, product tampering, insider threats and operational disruptions often exploit gaps in processes, handoffs and control environments.
These risks are amplified by the distributed nature of logistics networks, where responsibility is shared among manufacturers, carriers, ports, warehouses and third-party providers.
Addressing these challenges effectively requires a structured, risk-based approach grounded in established ISO standards and aligned with recognized ASIS International principles, including Enterprise Security Risk Management (ESRM).
It should further incorporate key frameworks such as the ASIS Risk Assessment Standard, the Physical Asset Protection (PAP) Standard and the Supply Chain Security Standard.
Together, these standards and frameworks form a cohesive foundation for a security program that is not only protective, but also fully integrated, measurable and aligned with organizational objectives.
A defining characteristic of mature supply chain security programs is the transition from isolated controls to integrated security management systems.
ISO 31000 establishes the foundation by defining risk management as a structured and iterative process embedded within governance and decision-making.
Building on this, ISO 28000 provides a purpose-built framework for supply chain environments, requiring organizations to establish and maintain a Security Management System (SeMS) specifically tailored to the risks associated with logistics operations.
ISO 28000 is particularly important because it moves security beyond tactical response and into the realm of formalized management discipline.
Organizations are required to document their security policies, conduct structured risk assessments, implement operational controls and engage in ongoing monitoring, internal audits and management review.
The emphasis is on consistency and continuous improvement, ensuring that security is applied uniformly across all nodes of the supply chain.
The ASIS ESRM Guideline complements this approach by positioning security professionals as strategic advisors who collaborate with business leaders to identify and manage risk.
In logistics, this requires close coordination with supply chain leadership, transportation management, procurement and operations.
Security decisions must be aligned with business priorities and strategic risk, balancing risk reduction with operational efficiency.
The ASIS Risk Assessment Standard provides a disciplined methodology based on the relationship between threat, vulnerability and consequence.
Within supply chains, this model provides a practical, consistent way to evaluate risks across diverse environments.
Threats may include organized cargo theft networks targeting high-value goods, insider involvement in diversion schemes or geopolitical instability affecting certain regions.
Vulnerabilities often emerge at transition points while consequences extend beyond financial loss, encompassing operational disruption, regulatory exposure and significant reputational damage.
When applied within an ISO 28000 framework, risk assessment becomes a repeatable and auditable process rather than a one-time exercise.
Assessments are documented, reviewed regularly and updated as conditions change, aligning closely with quality management principles that emphasize consistency, measurement and continuous improvement.
The ASIS Physical Asset Protection Standard emphasizes a layered security approach based on deterrence, detection, delay and response.
Within logistics environments, this approach must be applied consistently across different operational settings while adapting to specific risks at each stage.
At the point of origin, security focuses on controlling access, protecting inventory and mitigating insider threats.
Physical barriers establish the first line of defense, but their effectiveness depends on integration with access control systems, visitor management systems, surveillance technologies and operational procedures.
As goods enter the transportation phase, the risk profile shifts. Mobility introduces exposure, particularly in regions with known cargo theft activity.
Maintaining visibility becomes essential through Global Positioning Systems (GPS) and Radio Frequency Identification Systems (RFID), while AI-driven analytics identify anomalies such as route deviations or extended dwell times.
Shipping containers provide efficiency and standardization but also present vulnerabilities. Cargo container security is undergoing a fundamental transformation, shifting from passive safeguards to intelligent, real-time protection systems.
Traditionally, security relied on mechanical bolt seals that could only indicate tampering after a container reached its destination.
Today, however, those static controls are being replaced by smart, connected devices that provide continuous visibility and immediate alerts.
Modern electronic seals, often ISO 17712-compliant, are equipped with sensors that detect cutting, forced entry or tampering the moment it occurs and transmit alerts that include precise time and location data.
This evolution enables organizations to respond to incidents as they happen, rather than after losses have already occurred. At the same time, the rise of the Internet of Things (IoT) has given birth to the “smart container.”
These containers are embedded with multi-sensor devices that monitor location, door openings, environmental conditions and even shock or vibration throughout the journey.
The result is unprecedented end-to-end visibility across the supply chain, eliminating traditional blind spots. Complementing these systems are GPS-enabled locks and tracking devices that combine physical security with digital intelligence.
These locks not only secure the container but also allow remote access control, geolocation tracking and detailed audit trails of every interaction with the cargo.
Another critical advancement is the use of geofencing and analytics-driven monitoring. By defining approved routes and transit behaviors, these systems can trigger alerts if a container deviates from its expected path or makes unauthorized stops.
Increasingly, this data is fed into advanced analytics platforms that use machine learning to identify anomalies and predict potential threats before they escalate.
In parallel, emerging technologies such as blockchain are being explored to create tamper-proof records of custody and access, strengthening trust and transparency across global supply chains.
Taken together, these innovations represent a shift toward a layered, intelligence-driven approach to cargo security.
Smart seals, IoT sensors, GPS locks and analytics platforms now operate as an integrated ecosystem, transforming containers into active nodes within a broader security network.
The result is not just stronger protection against theft and tampering, but a proactive, data-driven capability that aligns with modern risk management principles, delivering security that is continuous, measurable and responsive to the evolving threat landscape.
As supply chains become increasingly digitized, physical and information security converge. ISO 27001 provides guidance for protecting systems such as tracking platforms and access control systems.
A breach in information security can directly compromise physical security, underscoring the need for integration.
Lighting and landscaping are critical elements of effective security. Still, their impact is significantly amplified when applied within a broader Crime Prevention Through Environmental Design (CPTED) framework.
Properly designed lighting systems should ensure consistent illumination across operational areas, eliminating shadows and dark zones while supporting both natural and technological surveillance.
Landscaping, when thoughtfully planned, minimizes concealment opportunities by controlling vegetation height and density, maintaining clear sightlines and reinforcing defined boundaries between secure and non-secure areas.
In high-throughput environments such as container terminals, warehouses and intermodal transfer points, CPTED principles extend beyond visibility to include access control, territorial reinforcement and natural surveillance.
Clearly marked perimeters, controlled entry and exit points and intuitive site layouts guide movement in predictable ways, reducing unauthorized access and opportunities for diversion or theft.
Features such as fencing aligned with lines of sight, strategically placed guard stations and the deliberate positioning of equipment and storage stacks all contribute to enhancing observation while discouraging intrusion.
Together, these environmental strategies integrate with physical security measures and technology systems, creating layered protection that is both preventive and responsive.
By designing spaces that naturally deter criminal behavior while enabling early detection, organizations can strengthen overall security posture in a way that is sustainable, scalable and aligned with broader risk management objectives.
Organizations can benchmark and strengthen their supply chain security programs by adopting a structured maturity approach grounded in ISO 28000, which emphasizes systematic risk management and continual improvement.
At the most basic level, security is reactive and ad hoc, relying on passive controls and identifying incidents only after losses occur.
As programs mature, they move into a defined, compliance-based stage, where policies, documented procedures and periodic risk assessments are established in line with ISO 28000 requirements.
At this stage, performance measurement is largely compliance-focused, tracking indicators such as inspection rates, seal usage and training completion to ensure foundational controls are consistently applied.
As organizations advance, they enter a managed, risk-based phase in which security measures are prioritized according to the likelihood and impact of threats identified through formal risk assessments.
ISO 28000 drives this progression by requiring organizations to evaluate risks across the supply chain and implement appropriate controls.
Here, companies increasingly deploy real-time technologies to enhance visibility and responsiveness.
Metrics evolve accordingly to include both leading and lagging indicators, such as mean time to detect incidents, response times and the percentage of shipments monitored in real time, providing a clearer picture of actual risk reduction and operational effectiveness.
At the highest level of maturity, organizations achieve a state of continuous improvement consistent with ISO 28000’s Plan-Do-Check-Act (PDCA) cycle.
Security becomes fully integrated into business processes and supply chain operations, supported by data analytics, performance monitoring and regular management review.
Advanced programs leverage predictive insights to anticipate threats, measure outcomes and evaluate return on security investment. In this optimized state, supply chain security evolves beyond compliance into a strategic capability.
This article was originally published in the September edition of Security Journal Americas. To read your FREE digital edition, click here.