Cybersecurity Risks in Smart Buildings: What Businesses Need to Know

Smart building technology is changing how businesses manage their workplaces, facilities, and infrastructure. Connected cameras, access-control systems, smart lighting, HVAC controls, sensors, energy-management platforms, and building automation systems can make facilities more efficient and easier to monitor.

However, greater connectivity also introduces new cybersecurity challenges.

A smart building is essentially a network of connected physical and digital systems. If these systems are not properly secured, attackers may be able to exploit vulnerabilities in connected devices, applications, networks, or user accounts.

For businesses, this means cybersecurity can no longer be considered only an IT issue. Protecting smart building technology should be part of the organization's broader cybersecurity strategy.

The Growing Connectivity of Smart Buildings

Traditional buildings typically relied on standalone mechanical and electrical systems. Modern facilities increasingly use connected technologies that communicate with centralized platforms or cloud-based services.

Building managers can remotely monitor temperature, lighting, energy consumption, security cameras, elevators, access systems, and other equipment.

This connectivity provides valuable operational benefits. At the same time, every connected device can potentially become another entry point that needs to be secured.

The challenge becomes greater as organizations add new devices over time. Without proper management, businesses may eventually have hundreds or thousands of connected endpoints across multiple facilities.

Why Smart Buildings Can Become Cybersecurity Targets

Cybercriminals often look for systems that provide an opportunity to gain unauthorized access, disrupt operations, or steal valuable information.

Smart building systems can be attractive targets because they may be connected to corporate networks and frequently communicate with external services.

For example, a compromised building management system could potentially be used as a starting point for accessing other network resources. Similarly, an improperly secured security camera or access-control device could expose sensitive information or create operational risks.

The exact impact depends on the architecture and security controls in place, but the underlying principle is important: connected building systems should be treated as part of the organization's digital attack surface.

Common Cybersecurity Risks in Smart Buildings

1. Weak Credentials

Some connected devices are deployed with default usernames and passwords that are never changed.

If attackers discover these credentials, they may attempt to gain unauthorized access to the device or the network to which it is connected.

Businesses should replace default credentials before deployment and use strong, unique authentication wherever possible. Administrative access should also be limited to authorized personnel.

2. Outdated Software and Firmware

Smart building devices rely on firmware and software to operate. Like any other software, these components can contain security vulnerabilities.

Manufacturers may release patches or firmware updates to address known issues, but organizations need a process for identifying affected devices and applying updates.

Devices that cannot be updated should receive additional security controls, such as network isolation or restricted access, where practical.

3. Poor Network Segmentation

A common security concern is allowing building systems to communicate freely with the organization's main corporate network.

If an IoT device is compromised, unrestricted network access could potentially allow an attacker to move toward other systems.

Network segmentation can reduce this risk by separating smart building devices from sensitive business systems and limiting communication to what is operationally necessary.

4. Lack of Device Visibility

A business cannot properly secure devices it does not know about.

As smart building technology expands, different departments, contractors, and facility teams may introduce connected equipment without centralized IT oversight.

Maintaining an up-to-date inventory can help organizations identify what devices are connected, where they are located, who manages them, what software they use, and whether they are receiving security updates.

Third-Party and Cloud Security

Modern building systems often rely on third-party vendors and cloud platforms.

A building management platform may allow facility teams to monitor multiple locations remotely, while vendors may provide maintenance, technical support, or software updates.

These services can improve efficiency, but they also introduce third-party cybersecurity considerations.

Before connecting a vendor platform to business infrastructure, organizations should understand how authentication works, where data is stored, what access the vendor requires, and how security incidents are handled.

Vendor accounts should receive only the permissions necessary for their responsibilities. Remote access should also be monitored and disabled when it is no longer required.

Protecting Sensitive Building Data

Smart buildings can generate significant amounts of information.

Depending on the systems deployed, this may include security camera footage, access logs, occupancy information, environmental data, energy consumption records, and information about building operations.

Not all building data carries the same level of sensitivity, so organizations should identify which information requires stronger protection.

Encryption, appropriate access controls, secure data storage, and retention policies can help reduce the risk of unauthorized disclosure.

Businesses should also understand how third-party platforms process and store information collected by connected building systems.

Physical and Cybersecurity Risks Are Becoming Connected

One of the most important aspects of smart building security is the relationship between digital systems and physical infrastructure.

A cyberattack against a traditional business application may primarily affect data or digital services. A compromised building system could potentially have physical consequences as well.

For example, unauthorized access to a building's access-control platform could affect who can enter certain areas. Disruption of building automation systems could affect facility operations.

This convergence means that IT teams, facility managers, security professionals, and building engineers may need to work together when assessing risks.

Employees and Contractors Matter Too

Technology is only one part of a smart building's security.

Employees and contractors interact with building systems, mobile applications, management platforms, and connected devices. Poor password practices, phishing attacks, unauthorized device connections, or excessive account permissions can create vulnerabilities.

Regular cybersecurity awareness training can help employees recognize suspicious activity and understand their responsibilities.

Contractors should also receive appropriate access controls. Temporary accounts and permissions should be reviewed and removed when a project or engagement ends.

How Businesses Can Improve Smart Building Security

Organizations do not necessarily need to eliminate connected technology to reduce cybersecurity risks. Instead, they should build security into the way smart building systems are selected, deployed, and managed.

A practical approach can include:

• Creating an inventory of all connected building devices
• Changing default passwords before deployment
• Using strong authentication and multi-factor authentication where supported
• Keeping firmware and software updated
• Separating smart building systems from critical business networks
• Limiting remote access
• Monitoring network and device activity
• Reviewing third-party vendor access
• Protecting sensitive building data
• Training employees and contractors
• Maintaining reliable backups where applicable
• Developing an incident response plan

Businesses that need additional expertise can work with experienced business cybersecurity services providers to assess their environment, identify vulnerabilities, and develop appropriate security controls.

Security Should Begin Before Deployment

One of the easiest ways to improve smart building security is to consider cybersecurity before purchasing or installing new technology.

Businesses should evaluate a device or platform's security capabilities before adding it to their environment.

Important questions include:

• Does the manufacturer provide regular security updates?
• How long will the device receive support?
• Can default credentials be changed?
• Does the platform support strong authentication?
• What information does the device collect?
• Where is that information stored?
• Does the system require internet connectivity?
• Can the device be placed on a separate network?
• How does the vendor respond to newly discovered vulnerabilities?

These questions can help organizations avoid introducing unnecessary security weaknesses into their infrastructure.

Preparing for Future Smart Buildings

Smart building technology is likely to become even more sophisticated as organizations adopt artificial intelligence, advanced sensors, automation, digital twins, predictive maintenance, and increasingly connected infrastructure.

These technologies can provide significant benefits, but they will also create more complex digital environments.

Organizations should therefore treat cybersecurity as an ongoing process. Regular assessments, software updates, access reviews, network monitoring, employee training, and vendor evaluations should continue as building technology evolves.

The goal is not to prevent businesses from adopting smart technology. Instead, it is to ensure that connected systems are deployed responsibly and protected throughout their lifecycle.

Conclusion

Smart building technology offers businesses valuable opportunities to improve efficiency, security, comfort, and operational visibility. But every connected device and platform can also introduce cybersecurity considerations.

Weak credentials, outdated firmware, poor network segmentation, excessive remote access, limited device visibility, and third-party risks can all increase an organization's exposure.

By maintaining an accurate device inventory, implementing strong access controls, segmenting networks, protecting sensitive information, monitoring connected systems, and educating employees, businesses can build a stronger security foundation for their smart buildings.

As physical infrastructure and digital technology continue to converge, cybersecurity should be considered an essential part of smart building design—not an afterthought.