Vanguard has hired RSA Security to protect investors' accounts online, The Wall Street Journal reports. Using systems similar to those at banks, the software looks for anomalies in customer activity. It also shows images to investors that they have selected beforehand to protect them against fraudulent websites aimed at stealing their personal information.

"What we're really trying to do is stay one step ahead of the bad guys," commented Tim Thornton, head of Vanguard's Web services. "We've done a lot of stuff to make sure that our systems are security, but this takes it a step farther."

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