By Stephen Northcutt, Jerry Shenk, Dave Shackleford,Tim Rosenberg, Raul Siles and Steve ManciniWith multi-tier network architectures, Web services, custom applications, and heterogeneous server platform environments, keeping data and information assets secure is more difficult than ever. Coupled with this added complexity is the fact that criminal organizations have organized their hacking efforts; it is no longer just “script kiddies” trying to break into your network.