http://www.digitaljournal.com/article/301231

Hackers retaliate in support of WikiLeaks founder

Posted Dec 8, 2010 by Edwin Manaois
A group of hackers called Anonymous claimed to have cracked several sites of international credit card service, MasterCard and Visa,on Wednesday in an apparent revenge over WikiLeaks backlash.
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MasterCard
MasterCard had earlier cut off and suspended payments to Wikileak, according to Yahoo News.
The post on Twitter shows the following tweets:
"WE ARE GLAD TO TELL YOU THAT http://www.mastercard.com/ is DOWN AND IT'S CONFIRMED! #ddos #wikileaks Operation:Payback(is a bitch!) #PAYBACK."
Anonymous is the well-known hacker group who have also attacked the Church of Scientology, Sarah Palin's website and Time Magazine's online polls.
A recent visit to the popular social network site showed that anon_operation account has been suspended by Twitter.
The suspension by MasterCard according to the company's spokesman Chris Monteiro was due to the company's policy of prohibiting customers from directly or indirectly engaging in or facilitating any action that is illegal.
In related hacking activities, the website of the Swedish Prosecutor's Office (aklagare.se) was unreachable for several hours, including Swiss Bank, PostFinance for freezing Wikileaks founder Julian Assange's account.
The tweet read as: "Target: postfinance.ch :: Grab your weapon and its settings: FIRE NOW!"
Shortly after Julian Assange was arrested in the UK, Time Magazine has removed him as the person of the year for 2010.