Security analysts and experts often talk about big data security analytics as a burgeoning space. But is that the really the case?

What is reality behind big data analytics for security? Is it mainstream? Does a security analytics market even exist? 

securitycurrent's Aimee Rhodes speaks with Gartner Research Vice President Anton Chuvakin who researched big data security analytics to find out what it is good for, where it is heading, who is using it, who isn't using it and who should be using it.