PSN is getting attacked everyday according to President of Sony's Worldwide Studios Shuhei Yoshida. He said that PSN is getting attacked "literally every day". After PSN and Live were attacked during the christmas period, Sony has now revealed that people are still attacking it.
Shuhei Yoshia had this to say to Gameinformer:
"We are always working against these attacks. Actually, an attack happens every day. Literally every day. Some days are bigger and some days smaller. Some days they devise new means, new ways - it's like cat and mouse. We have a partner company we work with, and we always update the new ways the attacker might deploy, so it is a constant battle."
This does seem that the network on Playstation is still going on everyday.