The Apple App Store suffered a malware attack on Sunday when it was found that hackers had copied and changed some of the Xcode development software called XCodeGhost. By doing so, the hackers were able to get into some of the apps sold in the store and create counterfeits of the software.

The Xcode was kept in cloud storage managed by the Chinese company Baidu. Apple is now working with their developers to make sure the Xcode being used is safe, according to representatives.

48 Counterfeit Apps Affected by Malware Attack

Apple representatives say they have removed all apps known to have been affected by the malware attack. There were an estimated 48 apps affected by the hackers, with some of them being very popular products like WeChat, and a ride sharing app called Didi Kuaidi. However, Chinese security said the number was at least 300 apps. It is not known how many of the affected apps were downloaded.

Apple Security Features Disabled and Download Locations Affected

To be able to copy the Xcode, it was noted that the hackers had to have somehow disabled existing security features at Apple. Hackers involved in the malware attack were also said to have possibly taken advantage of the tendency for developers in China to use local servers to download their Xcode, since Apple servers are sometimes slow.

Normally, the Apple platform is seen as more secure than other companies like Android or Windows.In fact, the strict rules and review process for the App Store have generally kept out most malware, but the size of this latest breach is unprecedented.

Malicious Code Spread Via Fake Xcode Software Tools

The developers in China were somehow tricked used tools that carried the malicious code that attacked the apps, according to Palo Alto Networks, a US security company.

This malicious code then spread via the fake Xcode tools that are used to make apps used in iPhones and other Apple devices.

This malware attack is not a normal occurrence for Apple, and is just the 6th time such an attack of malicious software is known to have gotten through their special screening and uploading rules that exist for the Apple App Store, according to officials.

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