Risk is how likely something like a request or action is to be harmful, and it's often ephemeral. Trust, however, is built up over time, and it's based on reputation
风险vs信任——Cloudflare区分两个维度：风险是瞬时的（这个请求是否有害），信任是历史积累的（这个来源是否可靠）。当AI agent代表用户行动时，这个框架决定了谁的AI能"通行无阻"，谁的会被拦截。