To contribute to the discussion whether application virtualization can help to mitigate browser based security risks we’ve performed some tests with an application virtualization solution (VMware ThinApp). The goal of the tests was to determine whether exploits can be stopped from causing harm if they happened within a virtualized deployment, which modes of deployment to use, which additional tweaks to apply etc. This newsletter describes the test cases and results and might thereby help to have a basis for well-informed decisions when it comes to the deployment of an application virtualization technology.