Bro is a passive, open-source network traffic analyzer and was originally developed by Vern Paxson, who continues to lead the project now jointly with a core team of researchers and developers at the International Computer Science Institute in Berkeley, CA; and the National Center for Supercomputing Applications in Urbana-Champaign, IL. Liam Randall and Seth Hall are on to give us additional insight into how Bro IDS is used.