Fast-tracking the adoption of Digital Technologies is occurring rapidly in Industry – connected devices, smart manufacturing solutions, IIoT devices and significant form of automation or remote controlling capabilities within all industries have resulted in optimized performance in many areas e.g. Energy, Utilities, Manufacturing, Logistics.
While achieving these levels of connectivity brings many benefits, it does create an entirely new set of issues – known as Visibility Gaps in OT Networks.
Organizations invested heavily to secure their IT networks; unfortunately, due to these new levels of connectivity, organizations will continue to find it difficult to see and secure their OT environments. Additionally, as industrial systems continue to be targeted across all verticals, this will create even more vulnerabilities than previously existed for them.
What are OT Visibility Gaps?
OT Visibility is described as the capability of an organization to track, monitor, and know the devices, connections, and actions taking place within the operational technologies of that organization.
In the absence of this kind of visibility, OT Visibility Gap is created. In this scenario, there is no capability on the part of the security department to monitor assets, connections between the devices, and activities taking place in the industrial network.
The problem with visibility in OT networks is that such systems are comprised of outdated and obsolete machines that have not been configured for cybersecurity.
Why Visibility Matters More Than Ever
Attackers realize that industrial settings are valuable targets for their attacks. An attack could potentially cause a disruption in the operations and result in monetary damage. It is difficult for companies to protect assets that are not visible to them.
A lack of visibility may prevent security professionals from being able to:
- Detect unauthorized devices.
- Identify vulnerable assets.
- Monitor suspicious network activity.
- Investigate security incidents.
- Understand the potential impact of a cyberattack.
Even a single unmanaged device can provide an entry point for attackers seeking access to sensitive operational systems.
The Growing Impact of IoT on OT Security
Advances in IIoT technology have widened the exposure area for most companies. Connected sensors, intelligent controllers, and remote monitoring applications provide significant amounts of operational information. But this creates additional security concerns for these devices.
Many IoT devices exist beyond the reach of any form of security measures. Some might lack appropriate authentication features, suffer from inadequate patch management, or even lack logging functionality altogether. The presence of such devices within an environment lacking appropriate monitoring capabilities increases OT Visibility Gaps.
Interconnectivity between systems requires companies to get more acquainted with their operational environment.
Common Causes of OT Visibility Gaps
Several factors contribute to visibility challenges in OT networks:
- Legacy Infrastructure: Many industrial systems were deployed years or even decades ago. These assets often lack modern security features and may not integrate easily with contemporary monitoring tools.
- Network Complexity: OT environments frequently consist of multiple vendors, proprietary technologies, and specialized communication protocols. This complexity can make asset discovery and monitoring difficult.
- IT and OT Silos: In many organizations, IT and OT teams operate independently. Limited collaboration can result in fragmented visibility and inconsistent security practices.
- Shadow Devices: Unauthorized or undocumented devices sometimes appear in industrial networks without formal approval or oversight. These assets can create unknown risks.
Closing the Visibility Gap
Addressing OT Visibility Gaps requires a proactive approach that combines technology, processes, and cross-functional collaboration.
Organizations should focus on:
- Continuous asset discovery.
- Network traffic monitoring.
- Behavioral analysis.
- Risk-based asset prioritization.
- Improved IT and OT coordination.
The new era of security focuses on detecting and analyzing anomalies to prevent them from becoming critical situations by utilizing real-time analysis. With the help of creating a high level of visibility in the IT/OT environment, decision-making becomes more efficient.
Looking Ahead
As operational technology (OT) environments continue to connect to more industrial operations, visibility will continue to remain a key component of overall cybersecurity. According to studies, organizations that have a clear understanding of their assets, communications, and potential risk will be more able to identify early warning signs of threat activity, thus enabling more effective responses.
OT visibility gaps create vulnerabilities that can be exploited by threat actors. Closing those visibility gaps will help improve an organization’s overall cyber defense and help organizations protect their operational continuity, safety, and business resiliency.