It's been a second bad weekend for Apple, following another alleged app-driven hack of its iTunes store. iTunes users should now change the password on their iTunes account as well as switching to a prepaid debit card for the service.

Over the weekend, reports have been coming in that a second developer has been using a similar approach to the Vietnamese group, which appears to have ramped a range of apps with similar names to the top of a section on the App store, said Barmak Meftah, Fortify's chief products officer.

"Over the 4th of July weekend, a Vietnamese group used the same strategy to ramp its apps to the top of the book charts on the App Store. This time around it seems it's the travel section that's been hit," he said.

"The clever aspect of this hacking strategy is that iTunes members will see an app at the top of the charts and download it, if only to see what all the fuss is about, and then open themselves up to a obfuscated malware infection or, more likely, see their iTunes account details being lifted and misused," he added.

Meftah went on to say that, whilst Apple will almost certainly stomp on this iTunes hacking methodology from a great height, the modus operandi is similar to that used by trending malware coders, who continually check online search trends and pump out malware via a range of hastily-registered infected Web sites.

If you have a simple dictionary word as a password it's now time to change it to something more secure.