Book extract: ex-Sony Entertainment CEO Michael Lynton recounts his role in sparking North Korea's 2014 hack, one of the worst cyberattacks in corporate history (Michael Lynton/Wall Street Journal)

Michael Lynton / Wall Street Journal: Book extract: ex-Sony Entertainment CEO Michael Lynton recounts his role in sparking North Korea's 2014 hack, one of the worst cyberattacks in corporate history   —  In an exclusive book excerpt, the former CEO of Sony Entertainment opens up about his role in unleashing one of the worst cyberattacks in corporate history.