OT/ICS Security
OT/ICS Security Monitoring & Detection Engineering
Industrial environments have different priorities, different technologies and different operational constraints. Securing them requires more than extending traditional IT security practices into the plant.
Logsmith brings SIEM, detection engineering and security operations expertise to the challenge of protecting industrial environments, with an emphasis on operational understanding, meaningful visibility and threat-informed detection.
Security that understands the operation
In a traditional IT environment, applying a security patch, restarting a server or isolating a compromised endpoint might be relatively routine. In an industrial environment, those same actions can interrupt production, affect critical processes or introduce safety risks.
HMIs, PLCs, RTUs, engineering workstations and supporting systems may operate continuously, sometimes for decades, with tightly controlled maintenance windows and dependencies that aren’t immediately obvious to an IT security team.
Changes often require engineering approval, vendor support, testing and careful coordination with plant operations. Even seemingly straightforward updates can have consequences beyond the individual device.
The engineering mindset is fundamentally different. The priority is keeping the process safe, stable and available.
Effective OT security needs to respect those priorities, working with engineers and operators rather than imposing controls that may be unsuitable for the environment.
Understanding the threat landscape
Industrial environments face threats ranging from ransomware affecting supporting IT infrastructure to sophisticated adversaries capable of interacting directly with industrial control systems.
Incidents such as Industroyer and TRITON demonstrate how attacks against industrial technology can move beyond data theft and affect physical operations or safety systems.
Understanding these threats requires knowledge of both conventional adversary techniques and the industrial protocols, systems and processes that underpin operational environments.
Threat intelligence becomes particularly valuable when it can be translated into relevant detection scenarios and monitoring priorities.
Visibility is only the beginning
Traditional security monitoring doesn’t always extend naturally into OT environments. Many industrial devices offer limited native logging, endpoint agents may be unsuitable, and protocols such as Modbus TCP lack native authentication and encryption.
Passive network monitoring, industrial asset context and carefully selected telemetry sources can help improve visibility without interfering with operational processes.
But collecting data is only part of the challenge.
Recognising unusual controller communications, unexpected engineering activity or potentially unauthorised changes requires an understanding of what normal operation looks like.
This is where detection engineering, threat intelligence and operational knowledge need to come together.
Where Logsmith can help
IT/OT security monitoring integration
Integrating available OT security telemetry with enterprise SIEM and SOC capabilities, while respecting network segmentation and operational constraints.
Industrial detection engineering
Developing and tuning threat-informed detections using available telemetry, industrial asset context and relevant adversary techniques.
SOC visibility and capability assessments
Reviewing monitoring coverage, data quality and detection gaps across IT and OT boundaries.
Threat intelligence and detection use cases
Applying research into threats targeting industrial environments to identify relevant monitoring requirements and detection opportunities.
Security monitoring architecture
Supporting the design of monitoring approaches that complement existing OT security tools and operational processes.
Bridging engineering and security
Industrial security works best when cybersecurity teams and operational engineers understand each other’s priorities.
Experience working alongside control engineers and operators in industrial environments has provided an appreciation of the practical realities of operational technology, from process availability and change control to the importance of understanding dependencies before making changes.
Logsmith combines that perspective with established expertise in SIEM, SOC operations and detection engineering to help organisations develop security monitoring capabilities that support, rather than disrupt, industrial operations.
Let’s talk about your OT security challenges
Whether you’re looking to improve industrial network visibility, integrate OT security monitoring into an existing SOC or develop more effective detection capabilities, Logsmith can help explore a practical approach suited to your environment.