Eighty percent of input to the brain is visual, and comes directly through the eyes. We humans are incredible machines with the ability to recognize patterns instantaneously. Machine technology is not capable of matching humans, and won't be for many decades. Security data visualization translates complex data relationships into meaningful visual patterns that humans can quickly interpret. The book Security Data Visualization: Graphical techniques for network analysis by Greg Conti and published by No Starch Press answers the important and core question: can visualization help with security? The answer is a resounding "yes".