http://www.newsweek.com/whos-leaking-tesla-secrets-elon-musk-claims-employee-sabotaged-company-982918

Billionaire technologist Elon Musk sent an email to Tesla staffers late on Sunday night revealing that a "quite extensive and damaging" sabotage operation had been uncovered inside the electric car company, with large amounts of highly-sensitive data being exported to “unknown third parties.”

The culprit, whose identity remains unknown, allegedly admitted to making “direct code changes to the Tesla Manufacturing Operating System under false usernames,” Musk, the company founder, wrote in the email, titled “Some concerning news,” which was obtained by CNBC. The saboteur was reportedly angered after failing to get a promotion at the firm, which is currently laying off around 9 percent of staff.