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Clampi is a man-in-the-browser trojan that steals financial information from companies that are sent to hackers to use for fraud scams. The virus has been around since 2007 and only affects Microsoft computers.[1] The virus can steal data from more than 4,500 websites. Clampi goes after utilities, market research firms, online casinos, and career sites.[2] Joe Stewart, of SecureWorks, said that it is one of the largest and most professional thieving operations on the Internet.[3]


  1. ^ Mills, Elinor (2009-07-29). "Clampi Trojan stealing online bank data from consumers and businesses". CNET. Retrieved 2009-10-06. 
  2. ^ Messmer, Ellen (2009-07-29). "Clampi Trojan revealed as financial-plundering botnet monster". Network World. Retrieved 2009-10-07. 
  3. ^ Krebs, Brian (2009-09-11). "Clamping Down on the 'Clampi' Trojan". Washington Post. Retrieved 2009-10-06.