According to a recent Check Point Software report entitled The Impact of Mobile Devices on Information Security [PDF file], 79 percent of businesses experienced a mobile security incident in the past year (h/t Infosecurity).

The survey of 790 IT professionals, conducted by Dimensional Research, found that such incidents cost more than $100,000 for 42 percent of businesses -- and for 16 percent of businesses, they cost more than $500,000. Among large businesses, 52 percent said mobile security incidents have cost them more than $500,000.

Almost all companies that allow personal mobile devices say the number of personal devices connecting those corporate networks is growing, and 45 percent of such companies say they have more than five times as many personal mobile devices connecting to their corporate networks than they had two years ago.

Still, the survey found that 63 percent of all businesses surveyed don't manage corporate information on personal devices, and 93 percent say they've faced challenges in implementing BYOD policies -- 67 percent say securing corporate information is their greatest BYOD challenge.

"Without question, the explosion of BYOD, mobile apps, and cloud services has created a herculean task to protect corporate information for businesses both large and small," Tomer Teller, security evangelist and researcher at Check Point, said in a statement. "An effective mobile security strategy will focus on protecting corporate information on the multitude of devices and implementing proper secure access controls to information and applications on the go. Equally important is educating employees about best practices as majority of businesses are more concerned with careless employees than cybercriminals."