Attack on MasterCard site a grass-roots effort
Attack on MasterCard site a grass-roots effort
WikiLeaks supporters built a cyber army that took down MasterCard's website using simple tools posted on the Web.

Boston: Advocates of WikiLeaks founder Julian Assange quickly built a cyber army that took down MasterCard Inc's website using simple tools posted on the Web.

MasterCard's website was shut down for much of the day on Wednesday as a group calling itself AnonOps organized a "Denial of Service" attack on the credit card giant, which had stopped processing donations for WikiLeaks after the United States criticized its release of sensitive diplomatic cables.

Denial of service attacks typically use botnets, or armies of computers that have been enslaved by criminal hackers, to bring down a website by hitting it with an overwhelming number of simultaneous requests for information.

But the MasterCard attack seems to have come from a grass-roots effort organized by AnonOps.

It distributes sophisticated hacking software that is relatively simple for supporters to install on their computers.

"It is very easy to launch these attacks," said John Bumgarner, chief technology officer for the US Cyber Consequences Unit, which monitors cyber attacks.

The group used Twitter to seek supporters, referring them to its website where they could download the software that turns a Windows or Mac PC into a weapon against the MasterCard site.

WikiLeaks has come under international scrutiny after releasing a slew of diplomatic cables that angered and embarrassed Washington. Assange was arrested in Britain on Tuesday over accusations of sexual offenses.

The MasterCard attacks are in apparent retaliation for the No. 2 credit and debit card processing company's move to block donations to the WikiLeaks website.

The AnonOps site links users to a chatroom, where some ask questions about how to use the software and others gloat about their success.

"MasterCard still down. Hell yeah," said one anonymous participant in the makeshift chatroom.

"Good job everyone!" said another user.

MasterCard said the attack did not compromise its "core" payment processing capabilities, but that there had been some limited interruptions to web-based services it offers customers. It did not elaborate.

As of early Wednesday afternoon, the software was programmed to attack the MasterCard site only, but AnonOps was soliciting suggestions for additional targets.

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