Skill Building: CTFs & Computer Fundamentals – Derek Rook – PSW #719

Derek and the hosts will discuss technologies to build CTFs as well as what types of things to consider while doing so. They will also talk about the computer fundamentals that are often undervalued when entering security. Visit for all the latest episodes!

Full Episode Show Notes

Skill Building: CTFs & Computer Fundamentals – Derek Rook


Derek Rook

Derek Rook – Senior Director Purple Team/Teradata, SANS Certified Instructor at Teradata/SANS


Derek is an industry veteran with over 20 years of experience spanning IT, security, and senior leadership. He currently serves as Senior Director of Purple Team at Teradata, driving a holistic security posture by aligning offensive security with security engineering and operations. A passionate educator, he is constantly working on new community education and outreach projects, including an offensive security focused YouTube channel, a few CTFs, and a variety of community talks. Derek holds several security certifications and a NolaCon Black Badge.


Jeff Man

Jeff Man – #HackingisNotaCrime Advocate, Sr. InfoSec Consultant at Online Business Systems


Cryptanalyst, infosec analyst, pioneering ex-NSA pen tester, PCI specialist and certified security curmudgeon. Currently a Sr. InfoSec Consultant for Online Business Systems.

Josh Marpet

Josh Marpet – Executive Director at RM-ISAO


Executive Director, RM-ISAO
Co-founder, MJM Growth
IANS Faculty
Blockchain Patent Holder
MISTI Instructor
Entrepreneurship Curmudgeon
Board Member BSidesDE
Board Member BSidesDC
Ex-cop and Fireman

Paul Asadoorian

Paul Asadoorian – Founder at Security Weekly


Paul Asadoorian is the founder of Security Weekly, which was acquired by CyberRisk Alliance. Paul spent time “in the trenches” implementing security programs for a lottery company and then a large university. Paul is offensive, having spent several years as a penetration tester. As Product Evangelist for Tenable Network Security, Paul built a library of materials on the topic of vulnerability management. When not hacking together embedded systems (or just plain hacking them) or coding silly projects in Python, Paul can be found researching his next set of headphones.

Tyler Robinson

Tyler Robinson – Director of Offensive Security & Research at Trimarc Security, Founder & CEO at Dark Element


As the Managing Director of Offensive Security & Research at Trimarc, Tyler leads a team of high-performance security professionals within the offensive security field by simulating sophisticated adversaries and creating scalable offensive security platforms using the latest techniques as seen in the wild. With over 2 decades of experience, Tyler specializes in Red Teaming, APT threat modeling, blackbox network penetration testing, and Physical/Social-Engineering. Tyler has presented at multiple conferences including BSides, DefCon and Blackhat panels, SANS security events and to multiple branches of the military.


  • Throughout 2022, CRA’s Business Intelligence Unit will be releasing research reports on the top topics across the security industry. Our first report will be on Third-Party Risk and the Supply Chain. To participate in the survey, please visit The results will be shared at our Third-Party Risk eSummit in January.