Cameron (left) and Tyler Winklevoss testified Wednesday at a hearing about virtual currencies held by the New York Department of Financial Services. Craig Ruttle/AP hide caption

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President Obama, working at his desk Monday night on the eve of his 2014 State of the Union address. Jacquelyn Martin/AP hide caption

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The security breaches at Target and Neiman Marcus have raised questions over how quickly companies are required to disclose that customer information was hacked. Joe Raedle/Getty Images hide caption

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A cryptographic chip embedded in a British debit card. America is nearly alone in still relying on magnetic stripes to authenticate purchases. Christopher Furlong/Getty Images hide caption

itoggle caption Christopher Furlong/Getty Images