How to Answer a Security Questionnaire: A 4-Step Guide | UpGuard

This is a practical guide on vendor security questionnaires for third‑party risk management: it explains why questionnaires are used, outlines common industry frameworks (CIS Top 18, CAIQ, NIST SP 800‑171, SIG, VSAQ, ISO 27001), and gives best practices for answering them efficiently in 2025—including providing relevant answers, building a centralized knowledge base, obtaining certifications, creating remediation plans, and leveraging automation and UpGuard’s AI Autofill to streamline responses.