A ransomware attack on Apple’s main manufacturing partner Foxconn has thrust the world’s most secretive technology supply chain back into the headlines, after hackers claimed they had stolen confidential Apple project files from several North American factories - a reminder to Silicon Valley that even the most polished brands can suffer a digital banana skin.

Famous for helping build Apple’s iPhones, Foxconn just suffered another cyberattack, highlighting the perils of warehousing some of the world’s most valuable data.

Affected factories back up and running, we're told