One of the most persistent myths in transit cybersecurity is the belief that meeting regulatory requirements is enough. 

Compliance frameworks, such as Transportation Security Administration (TSA) security directives, play an important role in establishing baseline expectations around risk assessments, incident response, and reporting. However, these frameworks are designed to apply broadly. They define minimum standards, not the full range of controls needed to protect a specific rail environment.  

What’s emerging across the industry is a shift from compliance-driven thinking to a more holistic transit cybersecurity strategy, one rooted in risk-based decision-making rather than checkbox requirements. 

That distinction is critical. Two organizations may both be compliant, but one may still have flat networks, weak segmentation, or limited visibility, leaving it far more exposed operationally. 

Reality: IT incidents can and do impact operations.

The Colonial Pipeline ransomware attack, which affected the computerized equipment managing the pipeline carrying gas and jet fuel across the Southeastern U.S., demonstrated how a ransomware attack on IT systems led operators to shut down operational systems as a precaution, disrupting fuel supply at scale.  

Reality: Rail systems are designed to fail safe.

Modern rail networks prevent multiple trains from occupying the same track segment. While cyber incidents can disrupt operations (e.g., stopping trains), causing collisions through cyber means alone is far less likely without physical intervention.

Reality: The barrier to entry is lower than ever.

Many incidents originate from stolen credentials, weak segmentation, or misconfigured access, not advanced exploits. Increasingly, attackers can leverage existing tools or AI-assisted methods to identify entry points.

Reality: It can be done securely and deliver major benefits.

When properly designed with segmentation and monitoring, IT/OT convergence rail security frameworks enable predictive maintenance, real-time visibility, and improved operational efficiency, making integration a strategic advantage, not a liability.

Contrary to popular perception, the most impactful cyber incidents in rail and critical infrastructure are often not highly sophisticated.

Instead, they tend to stem from foundational issues:

• Stolen or reused credentials.
• Poor network segmentation.
• Limited asset visibility.
• Flat network architecture that allows lateral movement.

This is why resilience is less about chasing the most critical vulnerability and more about strengthening the fundamentals through robust defense-in-depth strategies.

So what separates resilient rail organizations from vulnerable ones?

It comes down to a few core practices:

Flat networks are one of the fastest paths to widespread disruption. Dividing OT environments into zones limits the impact of a breach to a single area rather than the entire system.

Organizations cannot detect or respond to what they cannot see. Monitoring, logging, and asset inventories are essential for identifying threats early and understanding network behavior.

Multi-factor authentication (MFA) remains one of the simplest and most effective controls. Many attackers will abandon attempts when MFA is present.

Cybersecurity in rail is inherently cross-functional. Effective programs require collaboration between IT, OT, engineering, and leadership to align security with operational priorities.

Incident response plans must account for both cyber and physical processes, including the ability to operate manually if digital systems fail.

As rail systems continue to modernize, cybersecurity cannot be treated as a barrier to innovation. The goal is not to avoid new technologies, but to integrate them securely.

There is no one-size-fits-all solution. But organizations that move beyond compliance, focus on operational risk, and invest in foundational controls will be better positioned to withstand disruptions and maintain continuity.

In rail cybersecurity, the difference between myth and reality defines whether operations remain resilient when, not if, incidents occur.

Connect with our Security & Safety team to assess your risk, strengthen resilience, and develop a transit cybersecurity strategy tailored to your rail operations and long-term safety goals.

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