On November 24, 2014, Sony Pictures was hacked by a group calling themselves the “Guardians of Peace,” which the United States government later identified as being hackers from North Korea, taking vengeance on the studio for producing the film, The Interview, with Seth Rogen and Dave Franco, in which the two actors portrayed journalists hired by the CIA to assassinate Kim Jong-un.   Using destructive malware, the attackers erased data from the company's servers and deployed ransomware. The breach exposed confidential internal emails, unreleased movies, and sensitive employee data, causing an estimated damage of $15 million in the immediate aftermath. The US government blamed North Korea for the hack. However, the cybersecurity industry was skeptical of the government's claim. The US government has never released the information supporting their claim of North Korean involvement.   In his new book, INSIDE the Sony Hack: The Story Behind America’s Most Notorious Brink-of-War Cover-Up, New York Times Bestselling author Kent Heckenlively tells this story from the perspective of the most prominent of these cybersecurity companies, Norse Corporation, and exposes the massive cover-up.