Long story short, jailbroken iPhones are being attacked by a phishing-like worm in the Netherlands. Customers of ING who are attempting to log into their accounts via Safari are being rerouted to an address in Lithuania that displays a fake login screen.
But let us reiterate the fact that this only affects jailbroken iPhones. If you live in Holland and are running stock firmware on your iPhone then you’re fine. If, however, you do live in Holland, have a jailbroken iPhone and you happen to be a customer of ING then you might want to steer clear of ING’s site for a while.