.Targets included Mastercard.com, which stopped processing donations for WikiLeaks; Amazon.com, which revoked server space from the group; the online payment service PayPal, which cut off its commercial cooperation; the lawyer representing the two Swedish women who have accused Mr. Assange in the sex case; and PostFinance, the Swiss postal system's financial arm, which closed Mr. Assange's account after saying he provided false information by saying that he resided in Switzerland.
Anonymous, a leaderless group of activist hackers that had vowed to wreak revenge on any organization that lined up against WikiLeaks, claimed responsibility for the Mastercard attack, and, according one activist associated with the group, was conducting multiple other attacks.
That activist, Gregg Housh, said in a telephone interview that 1,500 activists were on online forums and chatrooms including Anonops.net, mounting mass and repeated "denial of service" attacks on sites that have moved against Mr. Assange and WikiLeaks in recent days.
The hacker army has rallied around the theory that all the acti [...]
