What you don't know about IT security could hurt you -- and your company. According to Symantec's 2011 State of Security Survey, IT security is the biggest risk companies face, ranking ahead of the theft of physical goods, terrorism and natural disasters. Mobility, social media and good old-fashioned hackers remain the biggest cyber threats. How can companies best mitigate these threats and keep their employees and their data safe from attack? Here, we highlight 10 survey findings to help you decide how your company stacks up against your peers. The survey was conducted in April and May 2011 by Applied Research on behalf of Symantec. Applied Research received survey responses from 3,300 executives in 36 countries, including C-level professionals, strategic and tactical IT executives, and individuals in charge of IT resources.