OT Cybersecurity Services
Framework-driven engineering services across the full OT security lifecycle — from ISA/IEC 62443 risk assessment through Purdue Model segmentation, passive monitoring, and industrial workforce training.
Critical Design Principle — Why Traditional IT Security Fails on the Plant Floor
Traditional IT security prioritizes Confidentiality, Integrity, then Availability (CIA). On the industrial floor, this hierarchy is inverted: Availability, Safety, and Reliability govern all decisions. Proact strictly prohibits the use of active network scanning or standard IT penetration tools within production environments. A single malformed probe can saturate low-bandwidth field networks or freeze a legacy PLC control loop — triggering unplanned shutdowns. Our architectures utilize 100% passive monitoring, hardware-enforced zone boundary isolation, and deterministic traffic validation to guarantee that operations remain secure, compliant, and continuously running.
Know Your Exposure Before the Adversary Does
OT Cyber Assessment & Risk Governance
Consequence-driven risk quantification rooted in physical process analysis. Our assessments use passive-only discovery methods and map cyber vulnerabilities directly to HAZOP/LOPA safety outcomes — exposing the real operational risks that IT-centric methodologies miss entirely. Every finding is rated on a consequence scale that speaks the language of plant directors: unplanned shutdown risk, process safety event likelihood, and regulatory enforcement exposure.
Delivery Scope
- Passive asset visibility mapping — zero active probes on live control loops
- Purdue Model Layer 0–4 gap analysis against IEC 62443-3-2 Security Level targets
- HAZOP/LOPA cyber-mapping for consequence-driven risk prioritization
- Regulatory compliance gap analysis: NCA ECC-1:2018, NESA IAS, CITRA, DESC ISR
- Network architecture review and zone/conduit boundary validation
- Third-party vendor and remote access supply chain risk assessment
- ISA/IEC 62443 Security Management System (CSMS) maturity benchmarking
- Executive risk summary and engineering-grade remediation roadmap
Defend the Purdue Model from Layer 0 to the Enterprise Boundary
Turnkey Architecture & Segmentation Engineering
Engineering-led design and deployment of zone and conduit architectures across the full Purdue Model hierarchy. We build hardware-enforced boundaries that physically prevent lateral movement between OT and IT networks. Industrial firewalls are configured for Deep Packet Inspection of industrial protocols — not generic TCP/IP traffic — with strict allowlisting of deterministic communication patterns.
Delivery Scope
- Custom zone/conduit segmentation engineering per IEC 62443-3-3 SR requirements
- Hardware-enforced unidirectional security gateways (data diodes) for historian replication
- Industrial firewall DPI configuration for Modbus TCP, OPC UA, DNP3, Profinet, EtherNet/IP
- Industrial DMZ design between Layer 3 (Operations Management) and Layer 4 (Enterprise IT)
- Secure remote access architecture with jump server and privileged session management
- Legacy HMI, RTU, and Engineering Workstation (EWS) endpoint hardening
- Industrial network switch hardening and VLAN segmentation
- Factory Acceptance Test (FAT) and Site Acceptance Test (SAT) security sign-off
Continuous Operational Awareness — Without Active Probing Risk
Managed OT Monitoring & Resilient Response
100% passive deep packet inspection monitoring that baselines normal industrial communication patterns and flags anomalies without injecting a single malformed query into the field network. Our OT-specific SIEM/SOC integrations are engineered around process availability and safety — not data confidentiality. Alerts are triaged by engineers with direct ICS/SCADA operational backgrounds who understand the difference between a legitimate maintenance window and an adversarial reconnaissance pattern.
Delivery Scope
- Passive DPI network monitoring — no active scanning on live control systems
- OT-native detection platform deployment (Claroty, Dragos, Nozomi, Forescout — vendor-agnostic)
- Industrial SIEM integration with OT-specific detection rules and playbooks
- Process behavioral baselining and communication baseline drift detection
- Serialized asset inventory with firmware version and CVE correlation matrix
- OT-specific Incident Response Plan (IRP) engineering for plant-trip mitigation
- Operational impact-first alert triage by ICS-certified analysts
- Regular threat intelligence briefings covering ICS/SCADA-targeted threat actors
Building Operational Defense Intelligence at Every Role Level
Specialized Industrial Workforce Training
Role-bifurcated training programs that recognize OT engineers and IT security teams operate in fundamentally different threat environments with different operational constraints. Our training explicitly teaches both populations: automation engineers learn to defend PLC/SCADA control logic, while IT security professionals learn the hard safety rules of OT engagement — preventing the most common source of OT incidents: well-intentioned IT tools causing plant trips on live control systems.
Delivery Scope
- Automation Engineers track: PLC/DCS/SCADA threat vector analysis and defense techniques
- IT Security teams track: OT environment engagement safety and operational constraints
- Layer 1/2 field bus threat vector workshops with live ICS lab exercises
- ICS/SCADA incident tabletop simulations with process consequence scenarios
- Cyber-informed engineering principles for control system design teams
- NCA ECC, NESA IAS, and IEC 62443 compliance readiness workshops
- ISA/IEC 62443 Cybersecurity Fundamentals & Specialist certification preparation
- Custom curriculum development for Aramco, ADNOC, and utility supply chains
Why OT Demands a Different Discipline
IT Security vs. OT Security
Treating industrial environments like enterprise IT networks is the most dangerous assumption in critical infrastructure defense.
Traditional IT Security Approach
Hazardous in OT- CIA triad: Confidentiality prioritized first
- Active network scanning (Nmap, Nessus) on all segments
- Rapid patch deployment windows — patching within days
- Standard IT penetration testing on live systems
- Data loss prevention as the primary concern
- Frequent endpoint agent updates and reboots
- IT SOC plays applied directly to OT alert queues
- Firewall rule changes without change-control review
Proact OT Engineering Approach
Safe for Live Systems- ASR triad: Availability, Safety, Reliability prioritized first
- 100% passive DPI monitoring — zero active probes on control loops
- Scheduled maintenance windows aligned with production shutdowns
- Passive vulnerability identification only — no active exploitation
- Process uptime and physical safety as the primary operational concerns
- OT-compatible endpoint protection with application whitelisting
- ICS/SCADA-specific detection logic written for industrial protocols
- Change-control engineering review before any network modification
Start with a Gap Analysis
Request an IEC 62443 Assessment
Our engineers will passively map your current OT environment, benchmark against ISA/IEC 62443 Security Level targets, and deliver a consequence-prioritized remediation roadmap.