David Han

Cybersecurity Engineer | SANS Mentor Instructor | GCIA, GCIH, GSEC, Security+

Los Angeles, California, United States

About

Solutions-oriented Cybersecurity professional with experience assessing and evaluating security designs to implement industry-standard practices that mitigate risks. Highly motivated providing leadership and network support by ensuring systems and databases are always maintained and secure through a collaborative environment. Trusted with working under pressure in deadline-driven environments where identifying, prioritizing, and coordinating the remediation of vulnerabilities in enterprise assets and applications are critical.

Experience

  • CENIC (La Mirada, California, United States)
    • Cybersecurity Engineer
      Aug 2023 - Present · 2 yrs 11 mos

    • Associate Information Security Analyst
      Aug 2021 - Jul 2023 · 2 yrs

      We operate the California Research and Education Network (CalREN), a high-capacity computer network with more than 8,000 miles of optical fiber. The network serves over 20 million users across California, including the vast majority of K-20 students together with educators, researchers, and individuals at other vital public-serving institutions. CENIC is governed by representatives of its Charter Associates institutions that it serves: California Community Colleges, California K-12 schools, California’s public libraries, the California State University, the University of California, and private universities (Caltech, Naval Postgraduate School, Stanford University, and University of Southern California).

  • SANS Mentor Instructor at SANS Institute
    Feb 2021 - Present · 5 yrs 5 mos

    • Teaching students how to identify, defend against, and mitigate against attacks against endpoints and attack pivoting along with how methods attackers remove evidence of compromise and hide their presence. • Demonstrated what Incident Handling is, why it is important, an understanding of the PICERL incident handling process, and industry best practices in Incident Response and Cyber Investigations. • Consistently demonstrate strong understanding of how to perform basic memory forensics and analyze network connections to monitor systems for over 15 unique attack methods • Educated military veterans on how to best configure and maintain intrusion detection systems, showing them how to read and interpret log files and network traffic using over 5 unique tools • Showcase how to create disaster recovery plans, processes, and procedures for 3 different security systems, researching and evaluating solutions to implement improved security practices

  • edX (Part-time · 4 yrs 8 mos)
    • Cybersecurity Instructor
      Nov 2022 - Aug 2024 · 1 yr 10 mos

    • Instructional Specialist
      May 2022 - Nov 2022 · 7 mos

    • Senior Cybersecurity Tutor
      Jun 2020 - May 2022 · 2 yrs

      • Trained 100+ students on how to successfully identify threats, attacks, and vulnerabilities while also showing them how to establish techniques in risk management and mitigation • Major participant in implementing 7+ critical concepts regarding security monitoring including prioritizing threats and log aggregation, applying them to SIEM software • Regularly demonstrated skills to work with 2 different types of cloud computing service models and firewalls to integrate security controls

  • Information Technology Consultant at Educational Sector
    Jul 2016 - Jul 2021 · 5 yrs 1 mo

    - Successfully designed and deployed tailored IT solutions for various clients, enhancing their operational efficiency such as automated vulnerability scans. - Offered ongoing technical support and maintenance services, resolving issues and backing systems up - Regularly analyzed clients' existing IT systems, recommending and implementing upgrades and improvements to ensure security and efficiency.

  • SRLA Marathon Assistant Coach at Students Run LA
    Sep 2016 - Mar 2017 · 7 mos

    •Mentored secondary students to experience the benefits of goal-setting, character development, adult mentoring and improved health by providing them with a truly life-changing experience. • Volunteered time after school and on weekends to help support students and coaches facilitate training • Managed student morale to keep them going and running beside them throughout all races and the marathon