Secure the plant.
Keep production running.
A safe, non-disruptive audit of your operational-technology estate — SCADA, PLCs, HMIs, DCS, historians, and safety instrumented systems. Aligned with IEC 62443, NIST SP 800-82, NERC CIP, and MITRE ATT&CK for ICS. We assess the risks that attackers exploit and that auditors ask about — without ever touching a live process.
Enterprise Network
ERP · mail · internet
Business Planning
MES · logistics · scheduling
Operations Mgmt
Historian · engineering WS
Supervisory Control
SCADA · HMI · OPC servers
Basic Control
PLCs · RTUs · IEDs
Process / Field
Sensors · actuators · SIS
Passive-first. Safety-first. Always.
OT is not IT. We adapt every method to plant reality — walk-downs before scans, read-only before anything active, and engineering-led sign-off on each step.
Scoping & Safety Contract
Plant walk-through, process criticality, MOC & PSSR integration, abort criteria, engineering sponsor.
Asset & Data-Flow Inventory
Passive capture, historian exports, config reviews, asset tags, cable-tracing where practical.
Zone & Conduit Assessment
Purdue-model alignment, IEC 62443 zone & conduit design review, IDMZ validation.
Remote & Vendor Access
Jump hosts, vendor VPN, remote-support tools (TeamViewer, AnyDesk), identity hygiene.
PLC / HMI / SCADA Review
Firmware & patch posture, auth, debug interfaces, project-file integrity, hardcoded creds.
Protocol Analysis
Modbus, DNP3, EtherNet/IP, Profinet, IEC 61850, OPC UA traffic review · passive only.
SIS / Safety System Review
TRICONEX, SIMATIC Safety, HIMA & similar — isolation, lifecycle, bypass controls.
Monitoring & IR
OT NDR coverage (Dragos, Claroty, Nozomi), SIEM integration, OT-specific playbooks.
Report & SL-T Mapping
IEC 62443 SL-T vs SL-A gap analysis, engineer-grade fixes, regulator-ready evidence pack.
No active scans. No surprise traffic. No downtime.
Every action is cleared by your engineering lead. We treat the plant like a cardiac ward — measure without disturbing.
Passive-First
Port mirrors, historian exports, documented configs. Active scans only in isolated test banks.
Engineering Sign-Off
Every in-scope action is logged & signed by the plant engineering sponsor before execution.
MOC Compliant
Integrated with your Management of Change and Pre-Startup Safety Review processes.
Vendor Warranties Preserved
No firmware modification, no parameter changes, no rehoming of configs · warranties intact.
Segregated Roles
OT-certified auditors (IEC 62443 practitioner) lead plant-floor work · not IT pentesters.
Safety-System Boundaries
SIS nodes are reviewed via docs & isolated test-benches only · never touched in-situ.
Every protocol your plant floor speaks.
Our analysts are fluent in the OT protocol stack — not just familiar with it. We can read packet captures the way your control engineers read ladder logic.
Function-code abuse, unit IDs, coil/register integrity.
SAv2/5, unsolicited responses, master-outstation audit.
CIP services, PCCC legacy, explicit/implicit messaging.
GSDML review, DCP abuse, S7 communication auth.
Password bypass CVEs, TIA project integrity, anti-replay.
Substation automation, GOOSE spoofing, IED cert chain.
Security modes, UA certificates, legacy DCOM exposure.
BBMD, network numbers, device-ID collisions, writes.
Telecontrol, ASDU abuse, link-layer integrity.
Device-description abuse, gateway-level isolation.
ACLs, TLS, topic hygiene, rogue publisher detection.
ABB, Honeywell, Emerson, Yokogawa, Schneider, GE.
From sensor to supervisor.
PLCs & RTUs
Controllers at the heart of process control.
- Siemens S7-1200/1500/300/400
- Rockwell ControlLogix / CompactLogix
- Schneider Modicon M580/340
- ABB AC500 · GE RX3i · Mitsubishi
- Firmware CVE · default creds
- Program integrity & backup
HMI / Engineering WS
Operator consoles & programming workstations.
- Siemens WinCC · TIA Portal
- Rockwell FactoryTalk · Studio 5000
- Wonderware / AVEVA InTouch
- GE iFIX · Ignition SCADA
- Patch posture · USB policy
- Account hygiene · project storage
DCS & Historians
Supervisory and data-archiving backbones.
- Honeywell Experion · Emerson DeltaV
- Yokogawa CENTUM · ABB 800xA
- AVEVA PI · Wonderware Historian
- IDMZ broker & data replication
- Role model & auth hygiene
- Backup/restore lifecycle
SIS & Safety Systems
Systems that keep operators and plants alive.
- Schneider TRICONEX Tricon/Trident
- Siemens SIMATIC Safety
- HIMA HIMax / HIMatrix
- Rockwell GuardLogix
- Lifecycle & bypass controls
- Review by docs & test-bench only
Networks & Field Buses
The transport layer under all process traffic.
- OT switches (Cisco IE · Hirschmann)
- Industrial firewalls (Palo · Fortinet · Tofino)
- VLAN / MAC hygiene
- Wireless (ISA100 · WirelessHART)
- Serial-to-IP gateways
- Fieldbus exposure surfaces
Remote & Vendor Access
The most common attack path into OT.
- Vendor VPN · jump-host inventory
- TeamViewer / AnyDesk / RDP
- Secure-remote-access gateways
- MFA · session recording
- Third-party access reviews
- Break-glass procedures
Domain-aware auditors — not IT folks playing plant.
Electric Utilities
Transmission, distribution, substations. NERC CIP, IEC 61850, protection relays, RTUs, SCADA.
Upstream · Mid · Down
Wellhead automation, pipeline SCADA, refinery DCS, terminal automation, custody transfer.
Water & Wastewater
Pumping stations, treatment plants, distribution SCADA, chemical dosing, SIS alignment.
Pharma & Biotech
GMP systems, batch control, 21 CFR Part 11, clean-room automation, cold-chain.
Discrete & Process
Automotive, FMCG, metals & mining. Robotics, line automation, MES integration.
Rail & Ports
Signalling, rolling stock, port cranes, terminal operating systems, IEC 62443-3-3.
Smart Buildings / Campuses
BMS, HVAC, access control, elevators. BACnet, KNX, LonWorks. Converging IT/OT/IoT.
DC Infrastructure
UPS, cooling plants, generators, BMS — the OT that keeps IT alive.
Defence & Aerospace
Protected-environment audits under DPSU / MIL norms & national-critical-infra rules.
Findings mapped to the frameworks regulators check.
Zones & conduits · SL-T vs SL-A · Foundational Requirements.
Rev. 3 · OT guide & overlay to 800-53 controls.
Tactic-technique mapping for every finding.
North-American bulk-electric compliance support.
Pipeline SCADA security alignment (upstream/mid).
Water-sector risk & resilience methodology.
Energy-industry security control set.
Critical-infrastructure framework alignment.
Power-sector Indian regulator directives.
Pharma electronic-records integrity.
US TSA security directives support.
Essential & important entities OT obligations.
A plant you can trust — and evidence an auditor accepts.
Zone & Conduit Map
Current-state Purdue diagram, zone classification, conduit inventory, and IDMZ validation.
SL-T Gap Analysis
Per-zone target vs achieved security level with specific remediation steps per foundational requirement.
Asset & Vuln Inventory
Complete OT asset list with firmware, CVE exposure, criticality tier, & patch recommendation.
Remediation Roadmap
Phased plan: quick-wins in days, segmentation in weeks, zone redesign in quarters.
Detection & IR Blueprint
OT-NDR vendor fit, SIEM use cases, OT-specific incident playbooks, tabletop-ready scenarios.
Regulator Evidence Pack
Control-by-control evidence for NERC CIP · NIS2 · NCIIPC · CEA · API 1164 · NIST 800-82.
Site visit to roadmap in 5-8 weeks.
Scoping & Safety
Sites, criticality, MOC integration, engineering sponsor, abort criteria, vendor coordination.
Desk Review
Docs: P&IDs, architecture, asset lists, procedures, prior audits. Interview plan.
Site Visit & Capture
Walk-down, passive traffic capture, interviews, config reviews, evidence collection.
Analysis & Gap Mapping
Zones/conduits, SL-T vs SL-A, CVE cross-reference, vendor-specific hardening gaps.
Reporting & Debrief
Executive + engineering reports. Joint walkthrough with plant & corporate security.
Remediation Support
Architecture support, vendor coordination, detection engineering, re-audit on remediation.
What operations and security teams ask first.
Will your audit cause plant downtime?
Will this void our vendor warranties?
Do you touch Safety Instrumented Systems?
Are your auditors IT or OT trained?
Can you help us achieve IEC 62443 certification?
Does this work for remote assets (wellheads, substations, pipelines)?
What about air-gapped facilities?
How much does it cost?
Know your plant's cyber posture — without shutting it down.
Book a 30-minute scoping call. Tell us about your process, sites, and regulator drivers — we'll send a fixed quote within 48 hours and propose the safest execution plan.