Assess

OT Cybersecurity Assessments

Engineering-led assessment of OT architecture, assets, remote access, hardening, legacy constraints, and practical risk reduction opportunities.

OT cybersecurity assessmentindustrial cybersecurityPLC security

The problem

Industrial operators need to understand the cybersecurity position of their operational technology environments in engineering context, but many sites have incomplete documentation, limited asset visibility, supplier access routes, and mixed legacy infrastructure.

What we do

Activities

  • review OT network architecture
  • identify critical assets and interfaces
  • assess vulnerabilities and design weaknesses
  • review hardening and remote access arrangements
  • identify proportionate risk reduction measures for live environments
  • support IEC 62443-aligned assessment activities

Deliverables

  • OT cybersecurity assessment report
  • asset and interface register
  • gap assessment
  • risk summary
  • recommendations plan
  • compliance evidence pack

Example scenario

Example scenario

Example scenario: A regional utilities operator required an independent review of several remote operational sites where PLCs, HMIs, telemetry equipment, and engineering access systems were connected through ageing network infrastructure.

Meridian-style response

Meridian-style response: The assessment identified architecture and evidence gaps, documented key OT assets and interfaces, and produced a prioritised improvement plan covering segmentation, access control, asset visibility, and documentation improvements.

Discuss ot cybersecurity assessments

Book a technical discovery call to discuss the control system, project stage, documentation gap, or assurance requirement without exposing sensitive site or client details.