Security expert Charlie Miller has found a flaw in code signing on iOS devices (via Forbes) that allows developers to sneak malware apps onto the App Store without Apple’s detection. The malware can then be used to read user’s contacts, make the phone vibrate or sound a ringtone, steal user’s photos, and more whenever the developer chooses. Sketchy!

To shed more light on the exploit Miller is giving a talk at the SysCan conference in Taiwan next week, but he does a good job in showing it off in the video above. Miller isn’t a novice to iOS and Mac security by any means. In 2008 Miller broke into the MacBook Air in two minutes through Safari and more.

Users would definitely be taken by surprise, seeing as we’re all pretty comfortable with how secure Apple keeps the App Store with the company’s review process. Sadly, it looks like any app could be used to harm users. For now, we suggest you keep away from lesser-known apps and developers until Apple issues a fix for the exploit.

Miller’s app has been both removed from the App Store and his developer account has been closed. At any rate, this was definitely a nice find.

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