We all need to agree that information security is a Big Data problem. Humans generate huge amounts of data in the form of blog posts, social media, business data, e-mails, instant messaging, videos, Darknet traffic, machine generated data and other sources. This explosion of data is fueled by the unprecedented growth of internet usage and smart phones. This ever-cheaper handheld technology enables us to create, capture, store, share, and manage information with unprecedented convenience and efficiency. Woven into this heap of noise are both our most guarded secrets and shadows of threats that seek to uncover them.