FBI executes search warrants in probe of pro-WikiLeaks cyber attacks - CNN.com
FBI agents have executed 40 search warrants throughout the United States as part of an investigation into recent coordinated cyber attacks targeting major companies, the agency said.
The United Kingdom's Metropolitan Police Service executed additional search warrants and arrested five people for their alleged role in the attacks, the FBI said in a statement Thursday.
A group calling itself "Anonymous" has claimed responsibility for the attacks, the FBI said.
Anonymous allegedly makes its attacks not through hacking, but merely by directing a giant traffic surge to the targeted website. That's called a DDoS attack, short for distributed denial-of-service -- and it's hard for most websites to defend against.