Through his experiences as a penetration tester, Joshua has worked with hundreds of organizations on attacking and defending mobile devices and wireless systems, ethically disclosing significant product and protocol security weaknesses to well-known organizations.
A hacker at heart, Joshua admits that his current role is his most interesting job so far because he gets the chance to hack into credit card processing systems, gambling casinos, and smart shower systems to learn the mistakes developers and system designers make and figure out how to exploit them. He also loves the thrill of developing the annual Holiday Hack Challenge, which gives him the chance to add new and exciting challenges that refect modern technology while appealing to a wide audience of players of different ages and experience levels.
In 2003, Joshua also began teaching for SANS as a way to combine his interests in hacking and teaching. Today, as an instructor for SEC504: Hacker Tools, Techniques, Exploits, and Incident Handling and SEC575: Mobile Device Security and Ethical Hacking, Joshua turns his experience hacking into customer networks into real-world case studies that students can relate to. “I really enjoy seeing my students make mistakes, realize the mistake, and immediately benefit from the realization,” he says.
One of Joshua’s favorite student interactions was working with a blind student who never let his physical challenges hold him back from achieving great things. He’s found that his must successful students in the classroom are “those who push themselves to struggle and stumble, then recover and accomplish new goals with my support.”
In addition to being a SANS instructor, Joshua serves as the technical lead of the innovative SANS NetWars CyberCity, overseeing and managing the development of critical training and educational missions for cyber warriors in the U.S. military, government agencies, and critical infrastructure providers.
Co-author of Hacking Exposed Wireless, 3rd Edition, Joshua is also open-source software advocate who’s conducted cutting-edge research resulting in several software tools that are commonly used to evaluate the security of widely deployed technology targeting WiFi, Bluetooth, and ZigBee wireless systems, smart grid deployments, and the Android and Apple iOS mobile device platforms.
Joshua runs websites for several non-profit organizations where he lives in Rhode Island, volunteers as a photographer for non-profit organizations, and contributes his time and talent taking high school senior portraits and headshots for low-income families. When he’s not working, you’ll find Joshua spending time with his family and dogs, doing photography, playing guitar, writing, exploring alternative printing from the 1800s using noble metals (platinum, silver nitrate, gold, and palladium), and of course hacking.