outsourced it elsewhere as retaliation for the controversial film. tonight the fbi is scrubbing sewn think's computer system trying to gather enough evidence to be able to definitively point the finger at the hacking culprit. >> it is a complex, nuanced investigation and involves not just going into your own i.t. systems, but the more sophisticated hackers have gone through multiple, multiple infrastructures to get to where they've gotten to, so it's not something that sony is going to solve in a day or a week or a month. >> reporter: the hack attack has had a devastating affect on the company with an avalanche of leaks revealing personal information and salacious e-mails about a-list celebrities. it's believed the sony hackers began penetrating their computer system as early as this past summer. but it wasn't until later the company reported it to authorities who began investigating in november. pamela brown, cnn, washington. now, a person close to the situation says sony has no plans at this moment to completely pull the movie from theaters.