The CISO's Guide to Buying AI for Security

AI is reshaping how security platforms are evaluated, but a confident answer is not the same as a correct one - an AI recommendation is only as reliable as the asset identity, behavior, topology, and controls behind it. This CISO's guide walks buyers through four layers to test before selecting a vendor: the trusted data foundation, domain-grounded reasoning versus generic fluency, the AI's ability to coordinate real protective action, and the human controls, privacy safeguards, and governance that keep autonomy accountable. It includes a weighted vendor scorecard, a reusable evaluation worksheet, a finalist comparison template, and the 20 questions every finalist should answer before a contract is signed. Its core argument: run a proof of value against your own production data and difficult assets, not a scripted demo, and never advance a vendor that scores below the minimum threshold on trusted data, safety, or privacy - regardless of its overall total.