Airdate: 11/25/07 Do you know that your financial information might be more vulnerable to identity theft if you use your credit card in a store rather than online? That's because hi-tech thieves can intercept a store's wireless signals, hack into its main computer, and steal customer information. It happened to millions of records at TJX, and unless stores constantly update their security systems, it could happen almost anywhere you shop. Lesley Stahl reports.

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