Case Study

Internet of Things: Bridging OT and IT

Case Studies

Enabling our client to understand existing process control networks while assisting with security and development phases to leverage future technologies.

The client engaged WorleyParsons to provide security assurance and enable compliance with the latest client and industry standards. The goal for the client was to understand the first steps to OT business integration and put in place plans to safely and securely bridge the OT/IT gap. This client is recognized as an early mover in the IT/OT space and has well developed standards and frameworks that local sites are mandated to follow. The rapid uptake of new technologies and inconsistent OT industry documentation meant the biggest challenge facing them was the lack of understanding existing networks in the OT space.

The client had engaged numerous IT based companies to solve this challenge for them, but they struggled to understand the control system and operational requirements of a modern hydrocarbons facility and lacked the training and ability to connect with key stakeholders. In some instances these IT companies were asked not to return to their the client’s facilities.


The first steps in IT/OT understanding is identifying and building relationships with key stakeholders in both domains. Once this is achieved, we utilize the WorleyParsons developed ‘Three Step Process to OT/IT Security and Integration’.

Key features:

  1. Minimum disruption
    The discovery phase can be completed on a live plant. We completed mapping and reports for six sites including two offshore platforms.
  2. Error reduction
    Implementing cyber security in the OT space is relatively simple once the discovery phase is complete.
  3. Benchmarked performance
    Standard network documentation has been developed in line with global IT standards.
  4. No lost time
    Management of change can take effect immediately post discovery phase.
  5. Clear documentation
    Documentation takes into account differences between IT & OT, such as static assigning of IP addresses.
  6. Assisting contract negotiation and future work scope
    Documentation produced early on enables clients to explore frame services agreements with IT companies.


The Advisian Digital approach to assisting the client was as follows:

  1. Discovery
    Applying a unique mapping process, developed in house, to map and document existing OT networks. This process can, and has, been completed on a live plant with no upsets. This phase includes gap analysis reporting, which prioritizes areas of concern and remediation steps.
  2. Remediation
    Using the findings and CAD drawings generated in the discovery phase to organize the network as per recommendations and as-build all documentation. This provides ongoing assurance and sets up a framework for management of change.
  3. Maintenance
    Assisting with future projects and helping the client set up frame services agreements with local IT based companies, allowing them to work with WorleyParsons to provide asset management and disaster recovery plans, as well as day to day system hardening and general support.
2018-10-25T03:00:48+00:00 November 22nd, 2016|Case Studies, Internet of Things Case Studies|