A hacker who recently gained access to millions of credit card numbers appears to have done it by breaking into a computer system at a company that processes transactions for catalog companies and other direct marketers. Data Processors International, based in Omaha, said Wednesday that “an unauthorized outside party” had tapped into its computer system, prompting a criminal investigation. Scott Jones, a company spokesman, refused to comment on when the hacker gained access and how many credit card account numbers may have been compromised. Credit card companies and the Secret Service have said that as many as 8 million account numbers were accessed. The card companies said they were notified of the incident early this month. Full Story