> A person reading a suspicious email might notice that the sender’s domain has an extra character, or that something about the request feels off. An AI assistant scanning your inbox for items that need action may not slow down to check those things.

I don't quite buy this in either direction (although they are both couched as possibilities, which makes it a pretty safe statement). Humans might notice, but years of annual mandated phishing trainings has led me to believe that humans as a whole are generally not great at noticing.

AI agents OTOH mostly do as they are prompted. If the human prompting them tells them to check these things, they will likely check much more consistently than any human. If the prompt doesn't say to check, the agent won't. But that again falls back to what the human might or might not think about.