"The government is asking Apple to hack our own users and undermine decades of security advancements that protect our customers — including tens of millions of American citizens — from sophisticated hackers and cybercriminals," he said. "We oppose this order, which has implications far beyond the legal case at hand."
According to Cook, the government's objective would require Apple to create a backdoor into its devices which currently doesn't exist, leaving thousands at risk.
"The government suggests this tool could only be used once, on one phone," he said. "But that's simply not true.
"Once created, the technique could be used over and over again, on any number of devices. In the physical world, it would be the equivalent of a master key, capable of opening hundreds of millions of locks — from restaurants and banks to stores and homes. No reasonable person would find that acceptable."
The company will have five days to file an appeal of the federal court's order.