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News report says investigators are unable to confirm eradication of those responsible for cyber-attack linked to The Interview
Sony 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 execute, 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 person to person. An old cache of BlackBerrys was also brought into action because the phones receive email via their own servers
"It took me 24 or 36 hours to fully understand that this was not something we were going to be able to recover from in the next week or two," Lynton told the Wall Street Journal.
Citing two people familiar with the investigation, the WSJ said investigators were unable to confirm that the hackers had been eradicated from Sony's systems. If the systems remain secure, Sony's network is expected to be fully operational within the next two months but hackers have so far released only a tiny fraction of the 100 terabytes of data they claim to have stolen
A group calling itself Guardians of Peace claimed responsibility for the hack in November, which resulted in the leak of current blockbusters, embarrassing private emails and the personal information of more than 47,000 people, including staff and a handful of film stars
North Korea is suspected of being involved in the hack, which preceded the release of the Sony Pictures film Them Interview, a James Franco and Seth Rogen comedy that depicts an attempt to assassinate leader Kim Jong-un
The North Korean ambassador Ja Song-nam described the film's release as an "act of war" in a letter to the UN secretary general, Ban Ki-moon, in July, while the North Korean foreign ministry threatened "merciless countermeasures" if the US allowed it to be released. But Pyongyang has denied involvment in the cyber-attack
Lynton said Sony's IT department had scrambled to get basic systems such as email back online over the Thanksgiving holiday weekend while the FBI and investigators from the cybersecurity firm FireEye searched for clues as to who had accessed the systems
Lynton said his priority was to make the key decisions quickly in the wake of the attack. "You can't be caught in the headlights doing nothing," he said
He said he was continuing to try to ease tense relations with large cinema chains, such as AMC and Regal Entertainment, which had refused to screen The Interview after the hackers made threats of violence
Lynton said he had personally called heads of the major chains to try to patch things up after he blamed them, in an interview on the US TV station CNN, for the cancellation of the general release of the movie. Since then the film has taken more than $18 in digital and box-office revenues, makeing it Sony Pictures' biggest ever online film release, helped by the publicity around the hack and offsetting its $44m budget
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