On the 8/9 Virtualization Security podcast, we continued our discussions on defense in depth with a look at end-user computing devices, specifically laptops and endpoint desktops, with Simon Crosby, CTO of Bromium. While we also discussed phones and tablets, we were focused more on the technology preview that now is Bromium vSentry. Bromium vSentry looks to protect laptops (and other machines) from unknown and zero-day attacks in a unique hardware-assisted way. There is now a new tool in our defense in depth toolbox that meets an ever-growing need. But what is the need, and what is the tool?