CNN  —  Less than three years before Elon Musk tapped him to take part in a sweeping overhaul of the US government, Edward Coristine, then 17, was the subject of a heated dispute between two executives at the Arizona-based cybersecurity firm where he was an intern. At issue was whether to allow Coristine to keep his job even though he was suspected of leaking proprietary information to a competitor. “You’re willing to risk our entire network to a 17-year-old?” one frustrated executive asked the