AI Security
How Enterprise Backend Teams Are Architecting Agent-to-Agent Trust Boundaries When Orchestrator and Subagent Models Come From Different Providers (And Why Implicit Trust Inheritance Is the Security Vulnerability Nobody Is Patching in 2026)
Imagine your enterprise has deployed a sophisticated AI orchestration layer. A GPT-class orchestrator model from one provider receives a high-level task, breaks it into subtasks, and dispatches those subtasks to specialized subagents: a code-generation model from a second provider, a data-retrieval agent hosted on a third, and a compliance-checking agent