Representative engagement
Cybersecurity Review of OEM and Vendor Packages
A representative package-system review where several suppliers must integrate securely into a wider OT environment with clear ownership and acceptance evidence.
Client profile
System integrator and industrial asset owner
Client situation
A system integrator was preparing to connect several third-party package systems into a wider industrial control environment. The packages had been designed and supplied by different vendors, each with its own network interfaces, user accounts, remote-support arrangements and cybersecurity assumptions. Individually the packages appeared manageable; the difficulty emerged at the interfaces, where responsibility for firewall rules, account management, remote access, patching, logging and acceptance evidence was not consistently defined between the asset owner, integrator and package suppliers.
The engagement
What the client needed
- define who owns each cybersecurity requirement across the asset owner, integrator and package suppliers
- confirm every package interface, required data flow and support route
- establish firewall, identity, hardening, logging and recovery expectations
- identify evidence that must be provided by suppliers before connection
- define what must be verified during FAT, SAT and final acceptance
How Meridian would approach it
- review each package against its intended operational interfaces rather than treating it as an isolated black box
- record network connections, required data flows, authentication methods and account ownership
- trace remote-access, hardening, logging, vulnerability and patch-management responsibilities into the design
- allocate requirements and evidence owners across the asset owner, integrator and supplier boundaries
- define factory-verifiable checks and carry site-dependent checks into SAT and handover
What the client would receive
- package cybersecurity and interface review
- responsibility and interface matrix
- supplier evidence requirements
- FAT/SAT cybersecurity checklist
- close-out and acceptance tracker
What this would enable
Client outcome
The integrator and asset owner would have a defined basis for supplier discussions, FAT/SAT verification and final package acceptance rather than attempting to resolve cybersecurity ownership during commissioning.
Representative engagement: this scenario is based on common industrial requirements and shows how Meridian would approach the work. It is not presented as a completed client engagement.
From example to a defined engagement
Related services
Choose this when your project needs specialist engineering capacity. A defined OT cybersecurity work package for risk, architecture, design review, supplier interfaces and assurance evidence within an active industrial project.
Have a defined OT or IEC 62443 question?
Use the 30-minute introductory call to outline the system, decision, project stage and evidence currently available. Keep sensitive site details out of the booking form.