Lulzsec

http://latimesblogs.latimes.com/technology/2011/06/lulzsec-anonymous.html

Recently a group known as Lulzsec has wreaked havoc online. They claim to be exploiting common flaws in private data collections such as back account data, government databases, and World of Warcraft accounts. Using what they call a common method for hackers (a MySQL injection) they have so far been incredibly successful in retrieving data from companies and governments worldwide. When they aren't hacking they occasionally DDOS (distributed denial-of-service) attack groups on demand such as Riot Games popular title League of Legends. As a group they label themselves as activists and not criminals and maintain a very lighthearted atmosphere on their Twitter and webpage. It's hard to say whether they really are a malicious entity with the appearance of major websites like Wikileaks.