Wayne Ma, The Information (Paywall):

Six years ago, a warehouse employee at one of Apple’s top suppliers, Jabil, stole thousands of iPhone 5C casings from a factory in China before the product was announced. The employee, with help from a security guard, falsified documents and avoided security cameras as he drove a truck filled with the candy-colored shells out of the gates, according to three people familiar with the matter.

The incident, which hasn’t been previously reported, was one of the most devastating leaks to come out of Apple’s supply chain, the people said. Images of the iPhone 5C soon appeared on the Internet, spoiling the reveal at the company’s carefully choreographed media event that September.

And from this MacRumors article:

Apple once even caught factory workers “digging a small tunnel in a corner of a room behind a large piece of machinery,” hoping to use it to funnel stolen components to the outside, according to the report. “People were chipping away little by little at the wall ‘Shawshank Redemption’ style,” one person said.

Fascinating underground market for any clue as to what’s coming from Apple.