The security researcher who identified a serious flaw in Apple’s Gatekeeper reports that the vulnerability remains despite two security patches applied by the company. Each, he says, only blocks the specific apps he used to demonstrate the method.

Gatekeeper in theory allows users to ensure that their Mac will only run apps downloaded from the Mac App Store – or alternatively, signed by a known developer if you opt for a lower level of protection. But Patrick Wardle last September found a major vulnerability in this protection which would allow any malicious app to be run no matter what Gatekeeper setting was chosen.

Wardle informed Apple, which issued a security patch in response, but Wardle has now reverse-engineered the patch and found that it provides only extremely limited protection …

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