The original title is: "Building Secure APIs in 2026: Threats Developers Can't Ignore"

Short summary

A comprehensive guide to API security in 2026 covering traditional threats like broken object-level authorization (BOLA) and emerging risks from LLM-wrapped APIs including prompt injection, excessive agency, and insecure output handling. The article recommends object-level authorization checks, treating all model inputs and outputs as untrusted, scoping AI agent credentials narrowly, and adopting zero-trust patterns with mTLS and short-lived OAuth tokens. Concrete references to Verizon DBIR, OWASP API Top 10, and OWASP LLM Top 10 ground the recommendations.

• •BOLA remains the top API flaw — fix at object level with centralized authorization checks, not just endpoint authentication
• •LLM-wrapped APIs add prompt injection, excessive agency, and insecure output handling risks — treat model I/O as untrusted, scope agent credentials narrowly
• •Zero-trust API gateway enforcement with mTLS, short-lived scoped OAuth tokens, and per-identity rate limiting recommended for multi-cloud and agent-driven traffic

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