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Secure. >> hackers are staying a step ahead of the game. here now rebecca jarvis. >> reporter: holiday season is primetime for bargains. as you are eyeing those discounts, criminals may be eyeing you. >> my last offer, $4 million. >> reporter: "shark tank" star robert herjavec is also a cybersecurity expert and shows us the brand new way hackers can quickly steal your credit card information. watch. my wallet right next to me. he just rests his phone on top and seconds later, he has my credit card number, history of all my transactions, even my pin. this is pretty simple. >> we staged this but...

Hotel's main computer system. what did they say at the hearing? >> debate that would do next to prevent hackers from staying more credit card numbers. lawmakers are holding herrings and issuing press releases. beyond that it's unclear whether they will actually pass a law. congress is locking at requiring retailers to protect payment data and sets fines and penalties for have to who steal the information. some credit card companies say they'll roll out smarter credit cards and payment systems, including credit and debit cards with smart chips. >> hoe secure are the cards with the chip in them?...

school. the gun was found at the scene. witnesses say lane walked up to a group of students sitting in the cafeteria and opened fire. the latest polls put republican presidential frontrunners mitt romney and rick santorum in a dead heat going into today's primaries. both candidates have made a final push in michigan. the second contest is in arizona. michigan is a vital test of romney since he was born and raised there and his father served as governor. "world business today" starts now. good morning from cnn london. i'm nina dell santos. >> good afternoon from cnn hong kong. i'm...