We have all spent a lot of time talking about the perils of open-door BYOB policies. The attached white paper by the Enterprise Strategy Group (ESG) takes a quantitative look at the impact of BYOB on typical enterprises. This paper discusses the challenges (especially security) created by all of the new mobile devices and the “de-perimeterization” of organizations. And finally it recommends some architectural solutions for these security issues. In particular, the paper addresses – at a high level – mobile device management solutions.