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Phishing is one way that identity thieves use the Internet to retrieve your personal information, such as passwords and account numbers.
The thieves' techniques include sending hoax emails claiming to originate from legitimate businesses and establishing phony websites designed to capture your personal information.
For example, you may receive an urgent email claiming to come from your bank and directing you to a website where you're asked to update or verify your account number or password. By responding you give identity thieves an opportunity to steal your confidential information.
Phishing is difficult to detect because the fraudulent emails and websites are often indistinguishable from legitimate ones and the perpetrators change identities regularly.