Hi there! I’m Reyn Hartono from Indonesia.
My journey into digital technology began at the age of 8 when I started programming with Visual Basic 6.0 on our family’s first PC. By then, the internet was still uncommon, and the book titled Microsoft Visual Basic 6.0 Professional Step by Step by Michael Halvorson was my only guide to learning programming.
This early experience sparked a lifelong passion for engineering. While focusing on software development, I continuously explore other engineering fields, such as networking, cybersecurity, and hardware engineering.
In my free time, I have found and reported various security vulnerabilities to well-known companies, ranging from low to high-risk severity.
This blog serves as my personal archive—a place to share my thoughts, document my learning journey, and occasionally post random things that I find interesting.
Feel free to reach out at me@reynhartono.com.