And you should also bear in mind that some of the security experts who are denigrating AV en masse right now have their own commercial agendas to push, in favour of other technologies that are not the 100 Per Cent Solution either.
The much reported/blogged iPhone worm does not affect all iPhones. Specifically it affects SOME iPhones that have been jailbroken. A significant part of the iPhone and iPod Touch security model is a technique called “whitelisting”. This is not new and is known to be a very effective security technology that can be used to prevent