ICS/OT Security
Specialized security for operational technology environments. We understand the unique requirements of ICS, SCADA, and industrial networks where availability and safety are paramount. Secure your critical infrastructure without disrupting operations.
The Challenge
OT environments have unique constraints that require specialized approaches. Solutions that work in IT often create unacceptable risks in industrial settings.
Legacy Systems
Many industrial systems run decades-old software that cannot be patched without risking stability or voiding vendor support.
Availability Priority
Downtime has immediate operational, safety, and financial consequences. Security controls cannot disrupt production.
IT/OT Convergence
Increasing connectivity between business networks and industrial systems creates new attack paths that didn't exist in air-gapped environments.
Limited Visibility
Many organizations don't have complete inventory of OT assets or visibility into network communications and vulnerabilities.
Capabilities
We implement OT security capabilities appropriate to your environment, risk tolerance, and operational constraints. Not every capability is right for every environment.
Gain visibility into OT assets using passive monitoring techniques that don't impact operations or trigger sensitive devices.
Monitor OT network traffic to detect anomalies, unauthorized communications, and potential threats—without inline inspection that could disrupt operations.
Design and implement network architecture that limits lateral movement while maintaining necessary operational connectivity.
Identify vulnerabilities in OT assets without active scanning that could disrupt sensitive industrial equipment.
Detect cyber threats and process anomalies that could indicate compromise or operational issues—with appropriate context for OT environments.
Develop OT-aware incident response procedures that balance containment with operational continuity and safety.
Industries
We have experience across multiple industrial sectors, each with unique operational requirements and regulatory considerations.
Energy & Utilities
Power generation, transmission, distribution, oil and gas, water and wastewater treatment facilities.
NERC CIP, TSA Pipeline Directives
Manufacturing
Discrete and process manufacturing including automotive, chemicals, pharmaceuticals, and food and beverage.
IEC 62443, NIST CSF
Transportation
Rail, aviation, maritime, pipelines, and logistics infrastructure with safety-critical control systems.
TSA Security Directives
Critical Infrastructure
Facilities designated as critical infrastructure requiring enhanced security posture and regulatory compliance.
CISA Guidelines, Sector-Specific
Compliance
We help organizations understand and meet OT security regulatory requirements through appropriate controls and documentation.
IEC 62443
International standard for industrial automation security covering system owners, integrators, and component suppliers.
NERC CIP
Critical infrastructure protection requirements for bulk electric system operators in North America.
NIST SP 800-82
Guide to operational technology security from NIST, providing ICS-specific security recommendations.
TSA Pipeline
Pipeline and surface transportation cybersecurity requirements from the Transportation Security Administration.
Threat Landscape
The threat landscape for industrial systems continues to evolve. These are categories of threats we help organizations prepare for—detection and prevention capabilities vary based on the specific controls implemented.
Ransomware
Ransomware that spreads to OT networks or specifically targets industrial operations for maximum leverage.
Targeted Attacks
Sophisticated attacks against industrial systems, often attributed to nation-state actors, with operational disruption as the goal.
Supply Chain
Compromised vendors, integrators, or software updates introducing risk into OT environments.
Insider Threats
Malicious or negligent insiders with physical and logical access to sensitive industrial systems.
Our Approach
OT security requires careful planning and coordination with operations teams. We don't deploy technology without understanding your environment first.
We work with your operations and engineering teams to understand the environment, identify assets, and assess current security posture without disrupting operations.
We prioritize risks based on potential operational impact, safety considerations, and realistic threat scenarios—not generic vulnerability scores.
We implement security controls carefully, with appropriate testing and rollback plans. Passive monitoring before active controls. Coordination with maintenance windows.
We provide ongoing monitoring, tuning, and support—or transfer knowledge to your team. OT security is continuous, not a one-time project.
Why intSignal
We're a security consultancy with real OT experience—not an IT security firm that added "OT" to our marketing.
We understand that availability and safety come first in industrial environments. Security controls must work within operational constraints, not ignore them.
We recommend platforms based on your environment and requirements—including our own in-house solutions where appropriate. We're not tied to a single vendor's approach.
We handle as much or as little as you need—from initial assessment through ongoing managed services. We don't disappear after the initial deployment.
Our Services
We evaluate your OT security posture and provide actionable recommendations prioritized by risk and feasibility.
We design and implement OT security capabilities appropriate to your environment, risk tolerance, and operational constraints.
We operate OT security monitoring on your behalf—with analysts who understand industrial environments and can distinguish threats from normal operations.
No obligation. We'll provide honest guidance about what's realistic for your environment.