PlayStation gamers could not access the console's network on Sunday due to a distributed denial of service, or DDoS, attack. Two parties have claimed responsibilit,y but one has provided proof via its Twitter account.
A hacker named "Fame" (@FamedGod) called out Lizard Squad, the group cited by the media, for the service disruption.
"Why must someone take credit of ones work?" Fame tweeted. "LizardSquad couldnt hurt a fly. Decrypting a memory dump and finding the server was all my work."
Fame tweeted proof of PlayStation's IP address and then pasted the IP addresses of all the Lizard Squad members. The hacker targeted Sony due to its security system.
"Hiding behind amazon servers doesn't help you Sony. Learn and hire people for security you cheap ass company," he tweeted.
"If Sony wanted to they could easily HIRE a team to monitor servers and filter DDoS attacks. They too high a mighty to spend money. #RIP."
Sony released a statement about the attack Sunday. Sony Online Entertainment Chief John Smedley also confirmed the DDoS attack, which barred users from the network's services.
The networks were hit by "an attempt to overwhelm our network with artificially high traffic," Sony said, according to USA Today. Sony was actively working to restore the PSN service.
"Although this has impacted your ability to access our network and enjoy our services, no personal information has been accessed," said Sony in a statement.
Lizard Squad did subsequently send a tweet to American Airlines warning Smedley's flight from Texas to California contained explosives onboard. The Sony executive confirmed the flight's delay on his Twitter.
"Awesome. Flight diverted to Phoenix for security reason," Smedley tweeted.
Lizard Squad claimed its actions are part of the Islamic State or ISIS efforts. "I'm ready to die for the Caliphate, prison is nothing," it tweeted.
Lizard Squad also threatened, via Twitter, that Microsoft's Xbox Live network would be its next target.
American Airlines also confirmed the diversion of Flight 362 from Dallas-Fort Worth to San Diego, according to USA Today. Authorities met the plane in Phoenix and American Airlines was working to get its passengers to San Diego as soon as possible.
"Of course we're going to accommodate our customers and get them to San Diego," said Michelle Mohr, the spokeswoman for American Airlines.