A secret order from the U.K. government compelling Apple to create a backdoor for its encrypted iCloud service has been met with legal challenges from civil rights groups Liberty and Privacy International. They argue the order is 'unacceptable and disproportionate', potentially affecting global users. The groups, represented by law firm Leigh Day, aim to join their complaints with Apple's ongoing legal challenge to the order. They emphasize the necessity of end-to-end encryption for privacy protection and request a public hearing for the case. The Investigatory Powers Tribunal is set to hear Apple's appeal today.