Joff has over 20 years of experience in the IT industry as an enterprise network architect, network security defender, information security consultant, software developer and penetration tester. He has extensive experience covering intrusion prevention/detection systems, infrastructure defense, vulnerability analysis, defense bypass, source code analysis, and exploit research with related software development skills in multiple programming languages. Joff is a certified SANS instructor for SEC573, has mentored SANS SEC503, and also taught mastering packet analysis for SANS. He is also a co-host on the Security Weekly podcast.