“WASHINGTON — The Federal Bureau of Investigation said it had executed more than 40 search warrants in the United States on Thursday as part of an investigation into an international group of computer hackers who attacked corporate Web sites last year in a show of support for WikiLeaks.

The F.B.I. investigation is part of a larger international inquiry into a loose confederation of hackers calling itself “Anonymous” that coordinated the cyberattacks against the Web sites of companies like PayPal, Visa and MasterCard late last year after they severed ties with WikiLeaks.”

From The New York Times