Sony has filed lawsuits following the breach . The suits say Sony may have expected and prepared for a cyberattack . The former employees say Sony should have known the system had a problem because of previous hacks . Previous security breaches had occurred as early as April 2011 , the suits say . Medical records , tax forms and Social Security numbers were put on the Internet .
Sony has filed lawsuits following the breach . The suits say Sony may have expected and prepared for a cyberattack . Previous security breaches had occurred as early as April 2011 , the suits say . Medical records , tax forms and Social Security numbers were put on the Internet .