Sony says it found no signs to indicate that PSN was hacked and that 2,131 logins were compromised, as a hacker group recently claimed.As first reported on GameSpot's sister site CNET, the hacker group that claimed responsibility for a DDoS attack on Blizzard's servers, claimed to have obtained usernames and passwords for 2,131 PSN accounts, 1,473 Windows Live accounts, and 2,000 2K Games accounts."We have investigated the claims that our network was breached and have found no evidence that there was any intrusion into our network," Sony said in a statement to Joystiq.