They have created excellent opportunities for computerized crime. Computer hackers use their skills to obtain secret business information and to steal money. For example, Kevin Mitnick, a computer hacker from California, obtained twenty thousand usable credit card numbers by breaking into the computer files of a credit card company. He also erased the accounting records of another big company before he was caught and arrested. In addition, banks worry that hackers will learn how to transfer money out of customers’ accounts into their own. “So far, we have been able to stay one step ahead of the hackers in this particular game, “said Charles Buckley, a bank spokesperson, “but security is never one hundred percent in any business.”