About

About

Jayce (Duc Tai Dang) — Information Security Student @ PTITPenetration TesterVulnerability Researcher(Vibe) Full-stack Developer.

About Me

I am an Information Security student at the Posts and Telecommunications Institute of Technology (PTIT) in Hanoi, Vietnam.

My work focuses on the intersection of software development and security research. I am passionate about understanding how complex systems function and finding creative ways to secure them against modern threats.

Technical Interests

  • Vulnerability Research: Specialized in Web Security (SQLi, XSS, SSTI) and memory corruption issues (Buffer Overflows).
  • Software Development: Experienced in building scalable applications using the MERN stack (MongoDB, Express.js, React, Node.js).
  • Security Automation: Developing scripts and tools to streamline the discovery of security flaws.

Vulnerability Disclosure

  • CVE-2026-25645: Discovered and responsibly disclosed an insecure temporary file vulnerability in the popular Python requests library.
  • Remote Code Execution (RCE) vulnerability found in LMS ATTT PTIT (CVE-2024-43425)
  • Independent Research: Actively analyzing open-source projects for logic flaws and common web vulnerabilities.

Projects

  • Gia Phả Online: Lead developer of a digital family tree platform. Focused on managing complex hierarchical data and ensuring data integrity using Node.js and MongoDB.

  • Lab Infrastructure: Building and maintaining containerized lab environments (Docker, VMware) for testing exploitation techniques.

Contact & Connect

I am always open to discussing technical challenges or collaborating on interesting security projects. You can reach me through: