Donavan's World

"We must do justice to the abilities we have been given."

Welcome to my site.

I am a cybersecurity professional, educator, and advocate. Explore my professional journey, personal milestones, and current projects below.

Outside cybersecurity, I advocate for sustainability, because my generation will bear the brunt of our actions on the climate.

Portrait of Donavan Cheah



Who am I?

Diagnosed with Asperger's Syndrome at age 10, I learned to embrace neurodiversity and channel my unique perspective into helping others. I studied Physics at NUS as a Kent Ridge Scholar before pivoting to cybersecurity.

Today, I actively give back to the community through offering career advice, community service, and inspiring the next generation.




International engagements in Romania, Uzbekistan, Taiwan and Japan



Cybersecurity: My Livelihood

Based in Singapore, I lead cybersecurity functions at Thales Digital Factory, focusing on threat modeling, security architecture, and offensive security. I speak globally at conferences like DefCamp (Romania), SECCON (Japan) and SINCON (Singapore).

I also built "Defend the Breach" (DTB) together with two talented designers, Maxence and Darius. DTB is a CISO role-playing gamification experience that teaches players how to balance tight budgets with critical security operations, and was featured at the Cyber Security Agency's Operational Technology Community of Experts Panel (OTCEP).

I also co-lead the Threat Modeling Connect Singapore Chapter (TMC SG) with Yoon Yik. Yoon Yik was my student at the Global Cybersecurity Camp 2025 in Taiwan. Together, we aim to democratize threat modeling and build a community of practice in Singapore and the wider ASEAN region. Find our events at Luma and subscribe to our calendar of both in-person and hybrid events. As part of TMC SG, we have showcased our works at SINCON (Singapore) and FIRST in Uzbekistan (which was featured on Uzbekistan National TV). I also mentor the annual TMC Hackathon, including a second-place team and lead APAC's "Threat Modeling Together" Days.

Beyond my technical certifications, I write about the intersection of cyber, microeconomics, geopolitics, and post-quantum cryptography as an ISACA Emerging Trends Working Group member. I am also a member of a hobbyist cybersecurity hacking group, SATCR4K, that has presented our work at CYSAT Asia and DefCamp. I also share my certification journey to inspire the next generation of offsec professionals, and contribute to NGOs such as the Geneva Dialogue. Separately, I also encourage youth to partake in conferences and hackathons. Some of their successful endeavours include open-source C2 tool demonstration at SINCON by two Temasek Polytechnic students and three Singapore Polytechnic students obtaining third place at a Threat Modeling Hackathon, beating professional teams.




Donavan involved in ASEAN-India Youth Summit as speaker.

Advocacy

In 2025, I was a delegate for the "5th ASEAN-India Youth Summit", held in Goa. I was part of a delegation of four other youth representating the education, media and young professionals.

I am also honored to shape environmental policy in Singapore as a founding "Exco member" of the PAP's "Climate Action Group".

I also volunteer as a Halogen volunteer, particularly in the Network for Teaching Entrepreneurship (NFTE). I was a judge at "NFTE's 10th year in Singapore", inspiring youth (of which 60 to 70 percent of them have challenging backgrounds) to make a difference through entrepreneurship.

At a personal level, I have been shaving my head for solidarity with children battling cancer through Hair for Hope for over ten years.

Besides this, I am also building a project that aims to make Singapore a more sustainable place to live in. Please reach out to me through the Google Form below to enquire on this!

What Do I Do?

Here is a quick look at my other professional and volunteer involvements.

Cybersecurity Voluntary Engagements

I also sit on the Vulncon advisory board, review board of various BSides such as BSides Mumbai and created the popular digitalworld.local series of vulnerable machines to help others learn ethical hacking.

Climate Action

As a founding Exco member of the PAP Climate Action Group, I actively advocate for sustainability policy. I recently organized an Environmental Impact Assessment workshop and was a key member of its launch.

Teaching & Education

I train the next generation of cyber professionals through OT Security Workshops, the Global Cyber Camp, and 1-on-1 mentorship via MentorCruise. One such mentee who has found a job as a direct result is Ronnie Taleb. I also help shape global certification standards on the ISC2 Technical Advisory Panel.

Community Outreach

Giving back is core to who I am. I have hosted youth dialogues with national leaders like Dr. Vivian Balakrishnan and frequently deliver career guidance talks at local schools, polytechnics, and universities to inspire young talent.

ASD Advocacy

I strive to be a beacon of hope for neurodivergent individuals. I actively advocate for Asperger's awareness by participating in the Purple Parade and speaking openly at school mental health events.

Content Creation & Tutoring

During the pandemic, I co-hosted the Very Clear Cut podcast with Leoson to cover topics such as mental health and energy sustainability. This led to a Straits Times feature on the Future of Work series. I also love designing curriculum, a passion that started when I founded a peer-tutoring group in secondary school. This has also led to a publication of a General Paper assessment book, Writing the World, where we incorporate tips to use AI as a learning tool to explore the world through General Paper.

Get in Touch

Want to connect? Feel free to message me on LinkedIn or fill out the form below to send an e-mail.