TPRM covers onboarding due diligence, security requirements in contracts, evidence review (certifications, attestations, penetration results), access and data-sharing boundaries, incident-notification duties, monitoring for deterioration, and orderly exit. It applies the same lifecycle whether the third party is a SaaS tool, an MSP, or a component supplier.
Key points
Risk-tiered effortA vendor handling critical data or holding privileged access deserves deeper assurance than the office plant service — match scrutiny to the risk the relationship actually carries.
Contracted controlsSecurity duties, audit or evidence rights, breach-notification windows, subcontractor flow-downs, and exit/data-return terms must exist in writing before reliance begins.
Important limitationAssessments and attestations are point-in-time evidence about a supplier, not continuous proof. Questionnaires reflect what vendors claim; certifications scope what was examined — neither substitutes for monitoring the actual connection and data flows.