#5 Apple uses a variety of manufacturers to better track leaks

According to a Reuters report, Apple relies on multiple firms for supplying parts for a product, just to ensure that, it is the only company that knows everything. “It also gives contract manufacturers different products, so that it will be clear who was responsible for any leaks, if they come up.”

#4 Teams are kept apart from each other

"To discuss a topic at a meeting, one must be sure everyone in the room is 'disclosed' on the topic, meaning they have been made privy to certain secrets," according to an excerpt from "Inside Apple: How America's Most Admired--and Secretive--Company Really Works."

"'You can't talk about any secret until you're sure everyone is disclosed on it,' said an ex-employee. As a result, Apple employees and their projects are pieces of a puzzle. The snapshot of the completed puzzle is known only at the highest reaches of the organization."

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