This white paper by IBM outlines the security risks of mobile devices accessing enterprise data and suggests approaches to mitigating the risk

Mobile devices, including smartphones and tablets, enable increasing numbers of employees to work “anywhere, anytime”. The security of enterprise data is a key concern, particularly on mobile devices that are easily lost or stolen. The security risk is further heightened by the proliferation of employee owned mobile devices in many enterprises. Employees will almost always take the path of least resistance in leveraging mobile devices for business purposes, which may lead to unsafe computing practices. A clearly documented and enforceable mobile security policy is critical to reducing the risk of data loss.

To read more about this, download the whitepaper by IBM using the instructions below