Apple's ex-NSA head of global security says more leaks are coming out of Apple headquarters lately

Secrecy is so important at Apple that some employees have attended an hour-long presentation given by ex-NSA investigators about how internal Apple information gets out into the world, according to the Outline's William Turton, who has watched a video of the briefing.

Apple officials said in the briefing that recently more information about upcoming Apple products has been coming from offices in Cupertino, California, rather than through the Asian factories that build Apple products. Apple's security teams require factory workers in places like Shanghai to go through sensitive metal detectors.

Even at Apple offices, the hallways and lobbies are referred to as "red zones," in which employees are discouraged from talking because there is a chance they reveal information that Apple hasn't decided to announce yet.

Still, David Rice, who leads global security at Apple, told employees that "I think what is unique at Apple is that we don't have a Big Brother culture," according to the Outline.

There are a lot of crazy details about the lengths Apple will go to to catch leakers over in the full report over at the Outline.