Apple has rehired a top encryption expert to bring stronger security to a range of its products, Reuters reports. Jon Callas, who worked at Apple in the 1990s and again from 2009 to 2011 to design the Mac’s encryption system, has rejoined the company to address security concerns in the wake of Apple’s public spat with the FBI. Both Apple and Callas declined to discuss his role at the company, but he is the brains behind several well-respected…
