A U.S. judge has ruled that Apple misused attorney-client confidentiality protections in a case brought by Epic Games, the maker of 'Fortnite'. The judge's decision came during a discovery hearing in San Francisco, where Epic Games accused Apple of violating a court order related to its App Store practices. The ruling mandates Apple to provide certain corporate files that it had previously withheld, impacting the ongoing legal dispute between the two companies. This case is part of a broader scrutiny of Apple's App Store policies and their implications for competition in the digital marketplace.