Over 60% of modern corporate breaches originate through trusted third-party software, managed service providers, or supply chain partners. Managing third-party risk requires moving beyond static annual security questionnaires toward continuous external posture verification.
1. Beyond the Annual Questionnaire
Self-reported spreadsheets (SIG, CAIQ) reflect an organization's security intentions at a single point in time, but offer zero guarantee that security controls remain effective months later.
Enterprise procurement teams should mandate three verification layers:
- Independent Attestation: Require current SOC 2 Type II reports and ISO 27001 certificates covering the specific software service being procured.
- Continuous Attack Surface Monitoring: Leverage automated external risk rating platforms to detect expired SSL certificates, leaked employee credentials, and open ports on vendor infrastructure.
- Strict Contractual SLAs: Incorporate mandatory 24-to-48 hour breach notification clauses and right-to-audit provisions into Master Services Agreements (MSAs).