Across US industry, cyber risk increasingly translates into operational risk: loss of availability, safety exposure, and regulatory consequence. In OT and ICS environments, weaknesses in segmentation, remote access, identity, or unmanaged assets open pathways that a determined adversary, or a bad day, can turn into a real-world incident. US operators need a partner fluent in both the plant and the growing web of federal expectations.
Arista Cyber delivers engineering-led OT/ICS cybersecurity services aligned to IEC 62443, NIST SP 800-82, and the Purdue Model. We prioritise controls by consequence to safety, availability, and production, not generic IT scoring, and we produce implementation-ready outputs designed for governance, audit, and safe deployment in live plants. Start with the fundamentals in our complete guide to OT security.
From a single site to a multi-plant program, we act as your engineering-led OT security advisor, and we understand the attack vectors targeting North American critical infrastructure.
Establish a defensible understanding of OT assets, communications, and risk exposure that directly impact safety, reliability, and production continuity.
Translate assessment findings into an OT-aligned architecture that supports operations, maintenance, and safety objectives.
Sustain security performance through continuous visibility, response readiness, and disciplined recovery.
Embed cybersecurity into daily operations through role-based capability and shared accountability.
US OT security sits at the intersection of reliability standards, sector directives, and process-safety rules. We map your program to the regime that governs your facility, and to the frameworks underneath. For the framework decision, see our comparison of NIST CSF and IEC 62443.
Mandatory Critical Infrastructure Protection standards for the Bulk Electric System. We help utilities and generators achieve and sustain CIP compliance with defensible segmentation, access control, and evidence.
TSA pipeline and rail security directives impose specific OT requirements on covered operators. We help pipeline and transportation operators meet them with practical, enforceable controls.
We align to CISA’s Cross-Sector Cybersecurity Performance Goals and advisories, translating federal guidance into concrete OT architecture and monitoring decisions.
For facilities under OSHA Process Safety Management (29 CFR 1910.119), which references ANSI/ISA 84, we align cyber and safety. IEC 62443 and NIST SP 800-82 structure the security program itself.
We are an engineering-led OT security company with an implementation mindset, not a generalist IT firm applying IT playbooks to a plant floor. That difference shows up in every engagement.
We start with structured diagnostics using IEC 62443 and risk-based methods to establish an accurate view of exposure, asset criticality, trusted pathways, and the most likely routes to loss of control or view.
Our recommendations account for legacy platforms, vendor limitations, shift change windows, and safety requirements. Solutions are enforceable in the field, not just documented in a report.
We align OT, IT, engineering, and leadership around clear decision rights and role-based responsibilities, reducing execution friction and supporting resilience beyond a single project.
We support single-site improvements and multi-site programs with consistent standards alignment, while respecting the local operational realities of each site.
Our OT/ICS cybersecurity training is suitable for organisations across a wide range of critical and industrial sectors.
We are engineering-led, not a generalist IT firm: our work aligns to IEC 62443, NERC CIP, TSA directives, and CISA guidance, and it is designed for the legacy systems, change windows, and safety requirements of real US plants. We deliver implementation-ready outputs that survive audits and deploy safely in live environments.
Yes. We help Bulk Electric System operators achieve and maintain NERC CIP compliance, and we help TSA-covered pipeline and rail operators meet their security directives, in both cases through defensible segmentation, access control, monitoring, and audit-ready evidence rather than paperwork alone.
IEC 62443 for program and zone/conduit design, NIST SP 800-82 for ICS guidance, and the Purdue Model for segmentation, with NERC CIP, TSA directives, and CISA CPGs applied where they govern the facility. For OSHA PSM sites, we align cyber with functional safety.
It can be, with OT-specific scoping, governance, and controls. We avoid methods that risk destabilising legacy devices and coordinate testing to protect safety and availability, never treating an ICS like an IT network.
Yes. We support single-site improvements and multi-plant programs with consistent standards alignment, keeping architecture patterns, segmentation models, and governance artefacts consistent across a portfolio while respecting each site’s realities.
Talk to an engineering-led OT security team that understands US industrial operations and the federal expectations shaping them.
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