The Taxonomy Arrives
OWASP published a shared vocabulary for agentic failure modes — which finally gives small businesses a way to ask vendors a question and evaluate the answer.
13 August 2026 — Twelve days into active enforcement, the most useful thing to reach the market this week was not a product. It was a list.
OWASP's Agentic Security Initiative published its Top 10 — a structured taxonomy of the ways autonomous systems fail. Goal hijacking. Tool misuse. Identity and privilege abuse. Memory poisoning. Insecure inter-agent communication. And five more, each with a definition, an attack pattern, and a control.
The value of a taxonomy is easy to underestimate. Before it existed, a business evaluating an agentic tool could ask "is it secure?" and receive an answer it had no way to assess. After it, the question becomes specific: how do you prevent goal hijacking, and can you show me? A framework does not make anyone secure. It makes the conversation testable.
That matters more now than it did a month ago, because enforcement is live and the burden has shifted. Under the Act, a deployer — which is what most small businesses are — carries obligations around inventory, classification, vendor conformity and monitoring. None of those are satisfiable without knowing what can go wrong in categories rather than anecdotes.
The ROI side of this week's picture is more encouraging than the security side. B2B case studies continue to show the strongest, most auditable returns in processes where a baseline already exists: quote turnaround, invoice reconciliation, first-line response times. The pattern holds because measurement is the precondition, not the afterthought.
What this means if you run an SME. Take the OWASP taxonomy to your next vendor conversation. Ask which of the ten apply to their product and what control they offer for each. You will learn more in twenty minutes than from any demo, and the vendors who can answer well are the ones worth keeping.
Mid-week review, in parallel with the Monday series.