At just 18 years old, Đặng Hoàng Ân, known online as Kaiyo, has already made a name for himself in the complex, high-stakes world of cybersecurity. Born in 2006, raised in Đong Nai, and now living in Ho Chi Minh City, this young prodigy has rapidly emerged as a quiet guardian of the digital realm.
From a young age, Ân showed an extraordinary talent for technology. While others were content with gaming or social media, he was deep-diving into the architectures of networks, dissecting malicious code, and studying system vulnerabilities. His curiosity wasn’t about breaking systems—it was about understanding them to protect others.
At 17, Kaiyo quietly intercepted a large-scale phishing campaign targeting Vietnamese users. His reverse-engineering and detailed reporting helped prevent thousands of personal accounts from being compromised. Though his name didn’t appear in headlines, his code did the talking, silently safeguarding the vulnerable.
With a growing reputation as the “invisible watchdog” of Vietnam’s cyberspace, Kaiyo has contributed to the tracing of fake payment platforms, exposed spoofed banking interfaces, and supported threat intelligence teams through malware behavioral analysis. Some call his instincts “the sixth sense of Kaiyo”—he sees patterns others miss, finds threats before they escalate, and does it all without seeking credit.
“Cybersecurity isn’t about being the loudest or the strongest. It’s about being awake when others are asleep, and building digital walls before the enemy even knocks.”
– a line from one of Kaiyo’s private notes shared among close peers.
Despite receiving attention and offers from several international security firms, Kaiyo has chosen to remain independent. He prefers to operate in the shadows—not to hide, but to work freely, ethically, and without influence.
Today, we proudly honor Đặng Hoàng Ân – Kaiyo, not just for his technical brilliance, but for his values, courage, and quiet dedication to protecting the digital community. He is a symbol of a new generation: fearless, ethical, and driven by purpose.
Thank you, Kaiyo, for your invisible shield. The internet is safer because of you—and the future of cybersecurity is brighter with your name in it.