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Hi-tech protection: Are you safe?

Thursday, 26 Sep 2013 | 12:00 AM ET

Over 20,000 security experts gathered in Chicago this week to discuss the latest in protecting people, property and soft targets. CNBC's Scott Cohn speaks to those in attendance about just how safe we are in shopping malls, sports arenas and schools and the technology used to fight potential threats in the wake of the Kenya shopping mall siege.