Studies show more than half of employees' phone information can be easily accessed.

The Institute of Directors is launching a course to help businesses tackle cyber crime - saying many aren't doing enough to tackle it.

Acting chief executive Simon Arcus said a KPMG study shows the ease at which hackers could get into devices used by employees.

"Businesses are ore vulnerable than they think, so 62 percent of those employees mobile devices, smart phones and tablets and so forth could be accessed at any time and quite easily."

Arcus asserts boards and businesses need to better understand the risks facing them.

"There's a lot of talk out there about cyber, there's a lot of commentators and consultants who talk it up, but what we actually need to do is try to find solutions to the risks that businesses are facing."

Arcus affirms the problem is growing as cyber hackers get more sophisticated.