For this chapter, we'll be using our standard version of Chrome (66.0.3359.139), along with a new developer environment deployment system, Vagrant, which—coupled with VirtualBox—will allow us to bootstrap our deliberately vulnerable XXE app (which we're using thanks to https://github.com/jbarone/xxelab). VirtualBox is a Virtual Machine (VM) client, and Vagrant adds a layer of dependency and environment management on top of that.
To install Vagrant and VirtualBox, pick the appropriate client for your system from their respective Downloads pages (https://www.vagrantup.com/downloads.html and https://www.virtualbox.org/wiki/Downloads).
