Just a developer with minimal achievements and enthusiast about security.
- AMC ICPC World Finalist 2020: https://icpc.global/ICPCID/99KWKZC3VO61
- Blog for yapping about security: https://blog.drstra.in/
- HackerOne profile: https://hackerone.com/drstrnegth
- Safevuln profile: https://safevuln.com/user/drstr3ngth/profile (rank 29)
- Linkedin profile: https://www.linkedin.com/in/phvietan/
I have 5 years of experience on application security
1 year at Cyber Jutsu
- Hacked Zalo project: https://vietnamnet.vn/loi-nghiem-trong-trong-phan-mem-chat-zalo-duoc-khac-phuc-i267951.html
- Built security e-learning website
- 3rd party pentest projects
4 years at LINE Corp
- HackerOne security report handler
- In-house pentests
- Offsec tools, security research in-house
- Security training for RDs
- LINE CTF 2023, 2024, 2025 challenges creator:
- https://ctftime.org/task/24724
- https://ctftime.org/task/28124
- https://goldleo1.github.io/posts/line-ctf-level-up/ (thanks goldleo1 for the great writeup haha I'm so lazy). Probably
level-upis one of my greatest challenge and I didnt expect a 12-grade to solve it wtf)
9 months at TikTok
- Yes, I'm working at TikTok, and yes, I'm still handling HackerOne report :) Probably that's what I like to do most: reading other people hacking attempt, thinking & exploiting bug variance, re-designing security decisions so that company doesn't get breached with the same idea again.
- Offsec tooling, Offsec platform builder :) DRY, make things that scale