Pictured: the Intel Museum in Santa Clara, California. Intel believes an individual with access to its Intel Resource and Design Center web portal is behind a prominent data leak. (Josh Edelson/AFP via Getty Images)

Depending on whose version of the story is correct, a 20 GB data leak affecting Intel presents an important lesson on either the perils of default credentials and insecure server misconfigurations, or the risks of sharing proprietary secrets with third-party business partners and customers.

Software engineer Tillie Kottmann, whose Twitter account looks to have been suspended, last week tweeted that an anonymous hacker shared with him a spate of internal Intel documents – the first of might be a series of leaks. Kottmann uploaded these confidential assets – including source code, product guides and manuals, technical specs, development and debugging tools and more – online via the file-sharing site MEGA and dubbed the leak "exconfidential Lake."

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