The server logs showed something unusual. A third-party PaaS service had requested more access than expected. That single event triggered a full risk assessment.
PaaS third-party risk assessment is not optional. Every external platform you connect to creates a new attack surface. Vendors can change code, alter data flows, or introduce unknown dependencies. Without a structured evaluation, you accept exposure that you cannot see.
A proper risk assessment starts with an inventory. List every PaaS provider integrated into your stack. Note the services they deliver, the APIs they expose, and the data they touch. The next step is access review. Map each permission and confirm it aligns with actual use. Over-permissions are common, and exploitable.
Analyze vendor security posture. Require evidence of encryption standards, authentication methods, and compliance certifications. Audit their incident response processes. If a PaaS provider cannot explain how they detect and contain breaches, treat that as a high-risk signal.