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OWASP LLM Top 10 — A Founder's Cheat Sheet

May 3, 2026 · 7 min read

The OWASP LLM Top 10 is the industry standard for AI app risk. We break down what each item means for a startup.

LLM01 Prompt Injection and LLM02 Sensitive Information Disclosure are where most startups fail first — usually in customer-facing chat or internal copilots.

LLM03 Supply Chain covers your API vendors, fine-tuned models, and plugins. If you cannot name every third party in your AI path, you have supply chain risk.

LLM06 Excessive Agency is critical for agentic workflows: can your agent send email, modify data, or call APIs without human approval? Scope it tightly.

LLM09 Misinformation matters for regulated advice (health, finance, legal). Document where humans review outputs and what disclaimers you show users.

You do not need to fix everything at once. Map each OWASP category to owner, status, and target date — investors prefer honest gaps with a plan over silence.

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