Who I Am

Hi, I'm Jaysen — a third-year Computer Science student at the University of Indonesia, Lead of NetSOS (Network, Security & Operating System SIG) at Ristek CSUI, and a Cyber Threat Response & Solution Intern at Superbank.

Achievements

Hack The Box University CTF 2025

International 4th Place & Indonesia 1st Place

HTB University CTF Certificate

Wreck-IT 7.0

2nd Place

Wreck-IT 7.0 Certificate

Arkavidia 10.0

3rd Place

Arkavidia Certificate

Cyber Jawara 2025

3rd Place

Cyber Jawara Certificate

Netcomp 4.0

Finalist

Netcomp Certificate

Hack The Box University CTF 2025

International 4th Place & Indonesia 1st Place

HTB University CTF Certificate

Wreck-IT 7.0

2nd Place

Wreck-IT 7.0 Certificate

Arkavidia 10.0

3rd Place

Arkavidia Certificate

Cyber Jawara 2025

3rd Place

Cyber Jawara Certificate

Netcomp 4.0

Finalist

Netcomp Certificate

Experience

Toolkit

Threat Intelligence IDA Volatility Wireshark Eric Zimmerman Tools Autopsy FTK Imager Nmap Hayabusa Bulkextractor memprocfs procmon WinDbg

This Blog

This is where I share CTF writeups and what I learn along the way. Most posts focus on the thought process, techniques, and investigation steps rather than just the final solution.