OPERATIONAL TECHNOLOGY (OT) RISK ASSESSMENT
Challenges associated with OT
There are no signs that the growing convergence of OT and IT systems will slow down. Smart entities in supply chains that are highly connected are offering efficiency and precision while lowering expenses.
Since many departments and divisions manage a range of OT and IT equipment, it can be difficult to pinpoint the vulnerable systems using specified criteria.
It is hard to create and maintain risk registers for OT and IT systems.
It is challenging to assign responsibility for all resources, applications, systems, and personnel that are involved in the delivery of particular services.
Challenges with OT system configuration management. The supply chain is more dependent on the availability of OT systems provider assistance.
This step provides an initial understanding of what and how security measures are implemented in the organization and in the factory or plant network. As part of the pre-assessment, assessors collect available documentation such as business impact analyses (BIA), network architecture diagrams, firewall rulesets and security policies.
This step determines the company’s security maturity. It comprises interviewing plant stakeholders from operator to management to understand the organizational setup and security governance, including formal and informal structures.
These conversations comprise international security standards, i.e., Industrial Automation and Control Systems Security (ISA-99/IEC 62443), Information Security (ISO/IEC 27002), NIST Special Publication 800-82, and NIST Framework for Improving Critical Infrastructure Cybersecurity.
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