Apple hires mobile encryption pioneer amid encryption debate

Apple has rehired a mobile encryption pioneer as it continues to face pressure from governments wanting access to user data stored on iPhones. 

Jon Callas most recently worked as a co-founder of Silent Circle, which produced the security-minded Blackphone and has joined the iPhone and iPad maker in an undisclosed capacity, Apple revealed to Reuters. Callas is a veteran of the security industry who also co-founded PGP Corporation.

He first worked at Apple from 1995-1997, then again from 2009-2011. He has two patents to his name from that second stint that are both focused on full-disk encryption, something that Apple uses in its smartphones, tablets and computers. 

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