
Among those arrested, four are accused of defacing Spanish political party sites and using DDoS attacks on other sites. One is also suspected to be the manager of Anonymous's computer operations in Spain and Latin America. The hacker went by the aliases "Thunder" and "Pacotron," say officials.
Anonymous has retaliated multiple times against police officials and other intelligence agencies in the past following arrests of their members, and this time will likely be no different. Rumors on Twitter had the group preparing to DDoS the Interpol site.
Also on Twitter, the Brazilian wing of Anonymous had this to say: "Interpol, you can't take Anonymous. It's an idea."