http://youtube.com/watch?v=LgmqiugpVyU - Video from DEFCON 23 Hacker Conference, Las Vegas, 2015
Chad Rikansrud:
http://linkedin.com/in/chad-rikansrud-233b1677 - On LinkedIn
http://facebook.com/chad.rikansrud - On Facebook
http://bigendiansmalls.com - Chad's Mainframe Security Site, discusses vulnerabilities and exploits related to mainframes.