Several highly known video gaming services are being attacked by a hacker or a group of hackers. These are DDoS attacks. They flood servers with data to prevent connections to real users. So far, victims of these attacks are Sony, Blizzard, Grinding Gear Games and Riot Games. The attacks seem to be by the group known as Lizard Squad.
Some common gamers have expressed themselves to Lizard Squad in their own unique way. Every company attacked by Lizard Squad have there servers down for maintenance.

Microsoft was attacked around 7 o'clock EST. People have been unable to log into their Live accounts. This is probably the worst of all due to you needing to sign in on the Xbox One.