FILE - In this Dec.11, 2009 file photo, a sign for MasterCard credit cards is shown on the entrance to a bank, in New York. Mastercard is having severe technical problem Wednesday, Dec. 8, 2010, possibly a target by supporters of WikiLeaks founder Julian Assange.(AP Photo/Mark Lennihan, file)AP – Hackers rushed to the defense of WikiLeaks on Wednesday, launching attacks on MasterCard, Visa, Swedish prosecutors, a Swiss bank, Sarah Palin and others who have acted against the site and its jailed founder Julian Assange.

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