There are only two mobile browsers that matter—Safari and Chrome. Between them they control 91% of the global market. There’s no Safari on Android, and so the only real head-t0-head battle for mobile users takes place on iPhone. And that battle has suddenly changed, with Google’s surprise new update targeting millions of users.

Google Chrome’s focus is the security of its 3 billion users. And it now appears that this security is being enhanced with AI to better defend against “dangerous sites and downloads.” But there’s a catch you need to understand before you switch this on.