A member of the Lizard Squad team confirmed that its group provided stolen data to Guardians of Peace that was used in the attack against the Sony Pictures. Lizard Squad is the group of hacker that several times hit popular gaming networks of Sony and Microsoft, in the Christmas day the hackers brought down the Play Station Network and the Xbox live service. The man is the same that released another interview to the BBC last week and if its version is true, it is the first time that the two groups are linked in the cyber criminal scenario and the theory of the attack by North Korea falters.”]
Source: http://securityaffairs.co/wordpress/31652/cyber-crime/lizard-squad-helped-gop.html