WikiLeaks founder Julian Assange remains in a London prison following his arrest on an international warrant from Sweden. Assange has not been charged but is wanted for questioning on allegations of sexual crimes. Computer hackers supportive of WikiLeaks meanwhile have launched a number of cyber-attacks on the websites of companies and others who have acted against WikiLeaks and Assange. Calling the cyber-attacks “Operation Payback,” the hackers disrupted the web operations of MasterCard after the credit card giant pulled the plug on its dealings with WikiLeaks. The so-called “hacktivists” also targeted the websites of Visa, Swedish prosecutors and a Swiss bank that closed Assange’s account. WikiLeaks meanwhile is seeing a surge of online support, with more than one million fans listed on its Facebook page.