3 Use Cases for Third-Party API Security

This report outlines practical guidance for securing interactions with third‑party APIs by addressing three primary use cases: (1) outbound data flows from enterprise apps to third‑party APIs—recommendations include discovering API usage via traffic and code inspection, applying DLP, and enforcing strong token-based authentication; (2) inbound API responses—recommendations include input validation, WAF/API protection, and sandboxing/antivirus/content disarm measures to prevent malicious payloads; and (3) SaaS-to-SaaS integrations—recommendations include discovering and vetting SaaS apps/tokens, enforcing OAuth policies, liaising with procurement/SPVM, and using SSPM/SSE tooling to inventory and control data sharing.