Third-Party Cyber Risk: A 90-Day Plan for Thai Organizations

Organizations rely increasingly on cloud, SaaS, contractors, and digital partners. Risk no longer ends at the enterprise boundary. Effective supplier assessment starts with critical services and business impact, not one generic questionnaire for every provider.

Start with the suppliers that matter most

Segment suppliers by their access to personal or sensitive data, system connectivity, dependency for customer-facing services, and substitutability. Ask what an outage or incident would mean for customers, revenue, and regulatory obligations. This determines the assessment and monitoring level.

A 90-day plan for a decision-ready baseline

1. Days 1–30: Build a supplier register linked to services, data, systems, and relationship owners; identify critical suppliers.
2. Days 31–60: Assess risk by criticality, review control evidence, and identify gaps in security, privacy, resilience, and incident response.
3. Days 61–90: Create remediation plans with owners, dates, and risk-acceptance criteria; establish executive review for critical suppliers.

Controls to ask for and test

• Access management, encryption, and data segregation appropriate to the service.
• Incident-notification timing and joint response arrangements.
• Continuity, recovery, and testing evidence for critical services.
• Subcontractor controls and a right to know about material changes.

What executives should see

A useful report is not a collection of questionnaire scores. It shows critical suppliers, residual risk, service impact, decisions required, and remediation progress. This helps cybersecurity, procurement, legal, and service owners make decisions together.