Apple's effort to protect its devices is about to tick off the FBI again. The company is closing off an unintended security hole in iOS that law enforcement has been using to hack into iPhones.

The security hole has to do with the Lightning port, which can offer USB access to an Apple product. That same access can be exploited by special police-purchased tools to break into fully-locked iPhones.

On Wednesday, Apple said it was aware of the vulnerability and decided to patch it. An upcoming iOS update will disable electronic access to the Lightning port an hour after the iPhone has been locked. (When the one hour is up, only battery charging through the port will be allowed.)
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