Managing Cyber-Physical Risk in Smart Buildings
Smart buildings have emerged as a transformative force in the landscape of modern infrastructure, promising enhanced efficiency, improved sustainability, and superior operational oversight. As elements within these buildings—ranging from building management systems and security platforms to energy infrastructures—become increasingly interconnected, they also inadvertently open up new avenues for cyber threats. These threats can disrupt physical operations just as readily as they can impact digital services. Peter Schwartz, a senior technology consultant from the cybersecurity firm OryxAlign, underscores the pressing need for organizations to rethink their management of cyber-physical risks in these interconnected environments.
The Merits and Risks of Connectivity
The integration of sophisticated building management systems, access control mechanisms, CCTV, environmental monitoring, and energy management features has revolutionized how buildings operate. This interconnectedness unquestionably brings substantial benefits, including greater operational visibility, the ability for remote management, and optimized energy usage. Yet, this extensive integration also enlarges the attack surface, emphasizing that smart buildings must be regarded as operational environments where cybersecurity is crucial for business continuity—not merely as technology platforms aimed at enhancing efficiency.
A critical dimension often overlooked is the potential impact of connectivity. Discussions surrounding smart buildings frequently revolve around energy efficiency, occupancy analytics, and automation capabilities. While valuable, such dialogues can obfuscate essential considerations regarding resilience. With the increasing interconnectivity of building systems, organizations must think critically about the ramifications if those systems experience unavailability or are manipulated with malicious intent.
For instance, consider a contemporary office where the building management system governs critical functions such as heating, ventilation, and air conditioning (HVAC) alongside access control and environmental monitoring. Should an attacker gain entry via inadequately secured devices and infiltrate the building management network, they might choose not to engage in traditional data theft. Instead, they could disrupt HVAC schedules, disable environmental alerts, and manipulate conditions in areas critical to operational integrity. This chain of events could lead to significant operational disruptions, potential equipment damage, and the loss of visibility for facilities teams, thereby highlighting the unique risks associated with cyber-attacks in smart buildings.
Identifying Security Gaps in Operational Technology
A significant number of systems that pose the greatest cyber-physical risks are often not treated as traditional IT assets. Environmental sensors, intelligent cameras, access control devices, and legacy building management controllers are categorized as operational technology (OT), which means they may not be subjected to routine cybersecurity reviews. When organizations are procuring these systems, the focus frequently lands on functionality, performance, and integration capabilities, often overlooking security requirements, updating responsibilities, and lifecycle management. As organizations continue to incorporate an increasingly diverse array of connected systems, these oversight gaps can take on critical importance. Vulnerabilities within operational technology can become gateways into broader business operations.
The complexity multiplies with the involvement of third-party vendors and systems integrators, who often possess privileged remote access for maintenance and support. Thus, evaluating the security practices of suppliers becomes a vital aspect of overall cybersecurity strategy. The UK Government’s Cyber Security Breaches Survey 2025 reveals a concerning lack of oversight in this area, reporting that only 14 percent of businesses conduct formal reviews of cybersecurity risks associated with immediate suppliers, while a mere 7 percent evaluate risks throughout their wider supply chain.
Building Resilience Through Visibility
Organizations do not have to compromise the advantages of integration to mitigate cyber-physical risks. The key lies in integrating systems in a way that enhances visibility while ensuring an appropriate level of separation between them. This approach emphasizes secure information sharing through methods such as network segmentation, clearly defined trust boundaries, robust identity management, and centralized monitoring. The primary goal is to achieve greater operational awareness and accelerated incident response times, rather than simply enlarging an interconnected environment.
Guidance from the National Institute of Standards and Technology (NIST) reinforces this necessity. Their "Guide to Operational Technology (OT) Security" categorizes systems like building automation and physical access control as requiring specialized cybersecurity measures. Recommendations include network segmentation, stringent identity management, and continuous monitoring to substantially diminish operational risks.
Moreover, monitoring serves a crucial function; most cyber-physical incidents begin as relatively minor anomalies. Unexpected device behavior, abnormal network traffic, failed authentication attempts, and unauthorized configuration changes can all serve as early warning indicators of a potential issue. By combining asset visibility with operational telemetry and cybersecurity insights, organizations can proactively identify problems before they escalate to affect building operations. Creating a robust visibility framework is essential, as organizations cannot adequately protect systems if they remain unseen.
Shared Ownership and Governance
As the lines between IT infrastructure and physical security continue to blur, organizations are prompted to reassess how responsibilities are distributed. The traditional siloed ownership models are becoming increasingly cumbersome; operational resilience now hinges on collaborative efforts across various disciplines. Facilities teams, IT departments, and physical security experts each contribute unique expertise, but a connected building requires a cohesive governance framework that applies cybersecurity policies, risk assessments, and incident management processes uniformly across both IT and operational technology environments. Establishing shared accountability is essential in safeguarding connected buildings against a landscape of increasingly complex operational risks.
For organizations striving to enhance resilience, a practical starting point is the establishment of a comprehensive inventory of connected building systems and devices. Many organizations lack a complete understanding of all connections within their environments. Once clarity is achieved, it becomes easier to pinpoint unsupported systems, eliminate unnecessary connections, assess vulnerabilities, and introduce appropriate monitoring mechanisms. Improving visibility stands out as one of the most effective and cost-efficient strategies for reducing cyber-physical risks.
As the movement toward smarter buildings gaining traction, cyber-physical risk should not be relegated as a niche concern for facilities or IT teams working in isolation. Although connected environments provide significant operational advantages, they also necessitate a unified approach to governance, monitoring, and resilience. Organizations that gain a robust understanding of their connected elements, impose clear ownership across facilities, security, and IT teams, and build visibility into their operational ecosystems will be better equipped to ensure business continuity as the evolution of smart buildings continues. For additional insights into strengthening the resilience of connected environments, visiting the OryxAlign website can provide valuable resources.