This December 9, 2010 photo shows the lo

This December 9, 2010 photo shows the logos of credit card giants Mastercard and Visa. The websites Visa and Mastercard were knocked offline December 8 by WikiLeaks supporters, who also took aim at US conservative standard bearer Sarah Palin and a US senator. Visa.com went down instantaneously at 4:00 pm (2100 GMT) as members of the hackers group known as “Anonymous” launched a coordinated cyber attack on the site as part of what they are calling “Operation Payback.” AFP PHOTO/Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)