If you have followed the saga of WikiLeaks at all you are probably familiar with the hacker group going by the name Anonymous that tried to lend support to the WikiLeaks cause by launching DDoS attacks against the websites of major companies that stopped supporting the site and cut off services. Anonymous launched DDoS attacks against Visa.com, PayPal.com, and Mastercard.com.
The attacks were able to force a few of the websites offline, but no user data was lost or accessed by the hackers. The FBI and authorizes around the world are looking for the people behind the attacks and have raided some ISPs here in the US in the search for clues.
The FBI raided Tailor Made Services in Dallas and seized a pair of HDDs to search for evidence. The raid happened after German police found a link to the company in an investigation in Germany. The FBI also raided Hurricane Electric in California for HDDs as well. Authorities are seeking details on the IRC servers used to coordinate the attacks.