CTF & Competitions

Hành trình chinh phục các cuộc thi CTF, Hackathon và các thử thách an ninh mạng. Chia sẻ kinh nghiệm, write-ups và những bài học quý giá.

4
Competitions
2
CTF Events
2
Contest & Hackathon
25
Challenges Solved

Featured Competitions

Dockerfile Contest 2025 - DevOps.vn
Featured
Optimization Contest

Dockerfile Contest 2025 - DevOps.vn

27/10/2025
Rank #2

Dockerfile optimization contest for Python applications organized by DevOps.vn community, focusing on minimal image size, fastest build time, and maximum security.

Docker
Optimization
Security
Python

Achievements:

  • Runner-up (Top 2) in Python category
  • Optimized image size from 800MB down to ~40MB
RMIT GenAI & Cybersecurity Hackathon 2025
Featured
Hackathon

RMIT GenAI & Cybersecurity Hackathon 2025

20/10/2025
Rank #22
berserker

International competition exploring the intersection of AI Safety, Cybersecurity, and Social Impact through Jailbreak Detection, Vibe Coding, and Red Teaming challenges.

GenAI
Cybersecurity
NLP
RoBERTa

Achievements:

  • Rank 22/110 teams globally
  • Built Jailbreak Detection model achieving ROC AUC 0.984
Recuite 2025 - HCMUS
Featured
CTF

Recuite 2025 - HCMUS

6/10/2025
Rank #4

CTF admission contest organized by the Computer Security Club, University of Science, VNU-HCM. Challenges include Cryptography, Forensics, Binary Exploitation, Web Security, and Reverse Engineering ranging from beginner to advanced difficulty.

CTF
Security
Cryptography
Forensics

Achievements:

  • Solved 26+ challenges across 5 different categories
  • Completed all Binary Exploitation intro challenges (BOF, Canary, PIE, GOT)

All Competitions(4)

Dockerfile Contest 2025 - DevOps.vn
Optimization Contest

Dockerfile Contest 2025 - DevOps.vn

thg 10 2025
#2

Dockerfile optimization contest for Python applications organized by DevOps.vn community, focusing on minimal image size, fastest build time, and maximum security.

Docker
Optimization
Security
RMIT GenAI & Cybersecurity Hackathon 2025
Hackathon

RMIT GenAI & Cybersecurity Hackathon 2025

thg 10 2025
#22

International competition exploring the intersection of AI Safety, Cybersecurity, and Social Impact through Jailbreak Detection, Vibe Coding, and Red Teaming challenges.

GenAI
Cybersecurity
NLP
Recuite 2025 - HCMUS
CTF

Recuite 2025 - HCMUS

thg 10 2025
#4

CTF admission contest organized by the Computer Security Club, University of Science, VNU-HCM. Challenges include Cryptography, Forensics, Binary Exploitation, Web Security, and Reverse Engineering ranging from beginner to advanced difficulty.

Score: 6946 pts
CTF
Security
Cryptography
picoCTF
CTF

picoCTF

thg 3 2025

CTF competition for beginner to intermediate levels with diverse categories.

CTF
Web
Crypto

Interested in CTF & Cybersecurity?

Tôi thường xuyên viết write-ups về các challenges CTF và chia sẻ kinh nghiệm về an ninh mạng. Theo dõi blog của tôi để không bỏ lỡ các bài viết mới!