Securing Building Automation: Why OT Network Cybersecurity Matters

In today’s interconnected world, operational technology (OT) networks are the backbone of modern building systems, from HVAC and elevators to surveillance and fire safety.

As these systems become increasingly integrated with IT networks and IoT devices, they bring new efficiencies—but also significant cybersecurity challenges.

A breach in these networks isn’t just a technical issue; it’s a threat to safety, operations, and trust. Imagine a hacker compromising critical building systems during peak business hours or tampering with essential safety mechanisms. The consequences could be catastrophic.

Let's explore why cybersecurity for OT networks matters, what’s driving the risks, and how to protect your building systems from evolving threats.

Why It Matters

• Operational Disruptions: Imagine a compromised HVAC system during peak summer or winter months, halting operations entirely.
• Safety Risks: Threat actors could exploit building system including elevators, fire alarms, or surveillance systems, endangering building occupants.
• Financial Losses: Downtime, ransomware payouts, and recovery costs add up quickly.
• Reputation Damage: A breach erodes trust among tenants, partners, and

What’s Driving the Risk?

• Increased Connectivity: OT systems now integrate with IT networks for streamlined management, creating more entry points for hackers.
• Legacy Systems: Older infrastructure often lacks robust security features and older software is often easily compromised.
• IoT Expansion: Internet of Things (IoT) devices multiply vulnerabilities, especially when not properly secured.
• Sophisticated Threats: Cybercriminals are leveraging advanced tactics to exploit gaps in OT security.

What’s at Stake?

• Service Interruptions: Interruptions to building operations impact tenants and reduce revenue.
• Data Breaches: Compromised OT networks can provide a pathway to sensitive tenant or business data.
• Compliance Penalties: Failure to secure OT systems could result in regulatory fines and legal liabilities.

Best practices to Protect Your OT Networks:

1. Conduct Regular Assessments: Evaluate vulnerabilities in your OT systems through frequent risk assessments.
2. Segment Networks: Keep OT and IT networks separate to reduce the impact of potential breaches.
3. Upgrade Systems: Upgrade or replace legacy systems with modern, cybersecurity-equipped alternatives and network structures.
4. Implement Monitoring Tools: Deploy tools for real-time blocking, monitoring and early detection of suspicious activity.
5. Provide Training: Equip staff with knowledge about cyber threats and best practices, such as recognizing phishing attempts.

The Bottom Line