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OT Cybersecurity Services
A decade of hands-on OT security delivery. Our team stands up the program. Resilion keeps it running.
Assessments
Plant High-Level OT Risk Assessment
A fast, IEC 62443-3-2 high-level read on plant cyber risk — where the biggest exposure sits and what is worth funding this year, in three weeks not three months.
Plant Detailed OT Risk Assessment
Plant-floor risk modeled the way operators experience it — loss-of-view and loss-of-control scenarios, per zone, with a remediation roadmap the CFO will fund.
OT Security Program Maturity Assessment
Where your OT security program sits, in board-ready scores — maturity against NIST CSF 2.0 and IEC 62443, with evidence behind every score and a roadmap sequenced to your budget.
OT Architecture & Controls Assessment
A defensible OT architecture for industrial operations — segmentation, IDMZ, and control gaps assessed against a target state that survives a CapEx review and the board.
OT Ransomware Readiness Assessment
Prove the plant can survive ransomware before the attacker arrives — backups actually restored, the runbook tested against a plant scenario, and the gaps that matter closed.
Hillstrong serviceRiskSpan — IT/OT Boundary Risk Assessment
Boundary risk measured by traffic, not by checklist. RiskSpan runs on real IT/OT traffic, traces indirect threat paths from ERP and MES into OT, and ranks every finding under the QUICK framework.
Advisory & Program
OT Security Program Design
The governance bones an OT cyber program needs to stand on — policy, decision rights, and a single chain of accountability an auditor can follow across every plant.
OT Governance Operationalization
Make the governance you already wrote actually run — decision rights, escalation, and IT/OT integration turned from slideware into a working operating discipline.
OT Vulnerability Management Program Development
A patch-and-vuln program the plant can actually live with — prioritized by production impact and compensating controls, not a thousand-line CVSS spreadsheet nobody actions.
Third-Party Vendor Risk Management for OT
Vendor and OEM risk owned, not delegated — remote access, USB discipline, and plant-cyber contract terms managed across every third party that touches OT.
OT Cyber Executive Advisory
Fractional strategic leadership for industrial security programs — a senior OT peer for the newly-hired leader and executive sponsor, on retainer, who has walked the plant floor.
OT Technology Selection Advisory
Defensible vendor decisions for industrial operations — requirements before demos, structured evaluation, and a decision record senior leadership can stand behind six months later.
Resilience & Response
OT Incident Response Planning & Simulation
Incident response that holds up when the line goes down — plant-specific runbooks and tabletop simulations where controls engineers know their role before the alert fires.
OT Disaster Recovery & Business Continuity Planning
Recovery plans that bring the plant back, not just the servers — OT-specific RTO/RPO, proven controller restores, and continuity built around what production actually needs.
Managed Services
ConvergeWatch — Continuous OT Monitoring
Continuous OT cyber watch where IT meets the plant floor — passive boundary monitoring, 24/7 detection against OT tradecraft, and every alert ranked by plant impact under the QUICK framework.
OT Cyber Build-Operate-Transfer
The third path between the Big 4 deck and the five-year MSSP lock-in — Hillstrong builds the OT program, operates it while your team ramps, and transfers it fully to you.
Staffing & Training
OT Cyber Staff Augmentation
Senior OT cyber practitioners embedded inside the program you are building — people who show up to the standup, guide the vendor implementation, and move the work now.
OT Security Awareness & Training Programs
Cyber awareness that sticks for the people running the plant — role-based training for operators and controls engineers, built on the HMI in front of them, not office phishing modules.
See Resilion on your fleet
Book a 30-minute demo. We will show how Resilion turns your existing assessments into a program you can run and prove.