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Botnets for hire likely attacked U.S. banks

posted onJanuary 10, 2013
by l33tdawg

Evidence collected from a website that was recently used to flood U.S. banks with junk traffic suggests that the people behind the ongoing DDoS attack campaign against U.S. financial institutions -- thought by some to be the work of Iran -- are using botnets for hire.

The compromised website contained a PHP-based backdoor script that was regularly instructed to send numerous HTTP and UDP (User Datagram Protocol) requests to the websites of several U.S. banks, including PNC Bank, HSBC and Fifth Third Bank, Ronen Atias, a security analyst at Web security services provider Incapsula, said Tuesday in a blog post.

Atias described the compromised site as a "small and seemingly harmless general interest UK website" that recently signed up for Incapsula's services. An analysis of the site and the server logs revealed that attackers were instructing the rogue script to send junk traffic to U.S. banking sites for limited periods of time varying between seven minutes and one hour. The commands were being renewed as soon as the banking sites showed signs of recovery, Atias said.

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