How can organizations manage third-party risks in OT environments?

Organizations can manage risks posed by third-party vendors and contractors in operational technology (OT) environments by implementing the following measures:

1. Risk Assessment: Conduct thorough risk assessments to identify potential vulnerabilities and threats associated with third-party vendors and contractors in OT environments.

2. Vendor Due Diligence: Implement a robust vendor management program that includes background checks, security assessments, and evaluations of their security practices.

3. Contractual Agreements: Establish clear contractual agreements that outline security requirements, responsibilities, and expectations for third-party vendors and contractors regarding OT systems.

4. Monitoring and Reporting: Implement continuous monitoring mechanisms to track activities and behaviors of third-party vendors and contractors within OT environments. Establish reporting procedures for any anomalies or security incidents.

5. Security Standards Compliance: Ensure third-party vendors and contractors adhere to industry best practices and compliance standards related to OT security such as NIST, IEC 62443, and ISA/IEC 62443.

6. Access Control: Maintain strict access controls and permissions for third-party vendors and contractors to limit their interaction with critical OT systems and data.

7. Incident Response Plan: Develop an incident response plan that includes procedures for addressing security breaches or incidents involving third-party vendors and contractors in OT environments.

By implementing these measures, organizations can effectively minimize and manage risks associated with third-party vendors and contractors in OT environments.