Key word: JAILBROKEN
When we see more than two worms on non-jailbroken iPhones, then I will worry...
A detailed analysis of the most malign in a recent spate of iPhone worms points to future mobile botnet risks. The IKee-B (Duh) iPhone worm, released in late November, exploited default root passwords on jailbroken iPhones to turn the smartphones into botnet clients under the control of a server based in Lithuania. The worm …
Even security experts designate it as a worm. The fanboi's are put to rest on the "it isn't a worm" argument.
That said, it does seem to be the "stupid worm", that meaning you're stupid enough to leave a default password on your phone. Kinda like leaving your Nokia with 12345 as the security code...