The high profile hack on Sony Pictures last year rattled corporate executives worldwide. The cyber attack, believed to be the work of North Korean hackers and purportedly linked to the movie “The Interview,” a political satire on North Korean dictator Kim Jong-un starring Seth Rogen and James Franco, exposed the movie studio to embarrassing leaks of confidential e-mails.
The leaks revealed that female film stars such as Jennifer Lawrence and Amy Adams were paid less than their male co-stars and that producer Scott Rudin had called Angelina Jolie a “minimally talented spoiled brat” in a private e-mail exchange. In addition, personal details of Sony Pictures’s staff, including salaries and social...