Bring-your-own-device (BYOD) is top of mind for most CIOs and IT leaders these days, but only a fraction of the IT organizations that have opened the BYOD door have gone beyond allowing access to company email and instant messaging, according to a recent study by Blue Coat, Web security and WAN optimization company. Blue Coat also found that IT staff and other company employees have dramatically different perspectives on security when it comes to mobile devices.