Hundreds of millions of iPhone users are vulnerable to hackers after the Apple app store experienced its first major attack.

Mobile security experts Palo Alto have released a report which says 39 iOS apps were infected with malware, which makes this the first reported case of malicious software infecting Apple's app review process.

Arguably the biggest app on the list was WeChat, the world's largest standalone messaging app, but the attack has also affected Didi Kuaidi, a car-hailing app, and music app NetEase, as well as a number of banking, stock market, and game apps, although the majority have been based in China.

Apple have already removed the affected apps from its store, and are already working with developers to release the new, clean versions of the infected apps.

Via Metro