Gotta love these little practical jokers…

Hackers strike back to support WikiLeaks founder

LONDON – WikiLeaks supporters struck back Wednesday at perceived enemies of founder Julian Assange, attacking the websites of Swedish prosecutors, the Swedish lawyer whose clients have accused Assange of sexual crimes and the Swiss authority that froze Assange’s bank account.
MasterCard, which pulled the plug on its relationship with WikiLeaks on Tuesday, also seemed to be having severe technological problems.
The online vengeance campaign appeared to be taking the form of denial of service attacks in which computers across the Internet are harnessed — sometimes surreptitiously — to jam target sites with mountains of requests for data, knocking them out of commission.

news.yahoo.com