Forensics experts hired by Sony Corp to investigate the massive cyber-attack at its Hollywood studio said the breach was unprecedented, well-planned and carried out by an "organized group," according to an email obtained by Reuters on Saturday.
Kevin Mandia, the top executive at FireEye Inc's Mandiant forensics unit, made the comments in an email to Michael Lynton, chief executive of Sony PicturesEntertainment (SPE).
They are among the first comments about the investigation to be made public, yet they do not discuss what people most want to know: The extent of the damage to the studio's network or who was behind the campaign, the most destructive cyber-attackreported to date against a company on U.S. soil.