This seems simple enough, but can we remember to do this every time, or will this eventually become problematic?
In order to protect yourself from such clever phishing attacks, Krause suggested users hit “Home” button when they are displayed such suspicious boxes.
If hitting Home button closes both the app, over which it appeared, and the dialog box disappears, then it was a phishing attack.
If the dialog and the app are still there, then it is an official system dialog by Apple.
It seems as though the risk of fake popups is only theoretical right now, but that won’t last long.