Han has been part of CENIC for approximately 2.5 years. He has also been a SANS Mentor for about three years. In this role, he educates and mentors students in their GFACT, GSEC, and GCIH courses, where they learn skills such as mitigating attacks against endpoints, performing memory forensics, and analyzing network connections to monitor threats. Alongside this, he has been a Cybersecurity Instructor with edX for about four years, focusing on training students in integrating security controls, prioritizing threats, and working with cloud security within Azure.