Sony hackers may still have access to computer systems

News report says investigators are unable to confirm eradication of those responsible for cyber-attack linked to The InterviewSony Entertainment is unable to confirm that hackers have been eradicated from its computer systems more than a month after the film studio was hit by a debilitating cyber-attack, a report says.The chief executive, Michael Lynton, has described how the company came up with an old-style communications system based on a “phone tree” to relay updates on the hack from per