The problem with showing a warning like that on every site you visit is that users will quickly become used to it and start ignoring it as a result. (Alarm fati

The problem with showing a warning like that on every site you visit is that users will quickly become used to it and start ignoring it as a result. (Alarm fatigue) Warnings are only useful if they're shown rarely enough for users to take note of them as an unusual event when they do occur.