PSN back up for PS3/Vita
Sony says the PSN is back up and working after today’s DDoS attack from the Lizard Squad. This applies to only the PS3 and PS Vita at the time of this posting. It appears that PSN for PS4 users is still experiencing issues.
Network service is currently returning for PS3 and PS Vita users, but you may experience slowness or login issues as the network stabilizes
— PlayStation (@PlayStation) August 25, 2014
Hopefully everything is working for PS4 users tomorrow at the very latest. With InFAMOUS First Light and other digital games releasing on Tuesday I doubt Sony wants this going on any longer than it has to.