My 2 opnions
1 - lulzsec is a covert ops... from US gov. Bringing chaos to approve censorship in the internet.
2.1 - People that find out a way to exploit a big botnet network and taking advantage of the "heat of revolution" made a lot more people to "donate" their machines to a botnet, exploits, previous hacked documents.
2.2 - People that worked in a way to spread malware for a couple of months or years and built their own botnet network and taking advantage of the "heat of revolution" made a lot more people to "donate" their machines to a botnet, exploits, previous hacked documents.
I strongly believe in the number 1.