The Lizard Squad
I think if I was hacking a multi-nationale, who have huge spending power, I would be a little bit more reticent in announcing my name.
Sony do actually have the means to spend 10 Million of finding the perps.... How long it will take them doesn't really matter. I am sure that after making a donation to their local security agency they will quickly get some help...
The Lizard Squad better learn to become The Chamelon Squad and disappear into the background very quickly.
I never understood the script kiddie desire for "publicity", it's kind of paradoxical.