Tijul Kabir Toha
@froster
Identity Matrix
Tijul Kabir Toha aka Froster
CSE @ Pabna University of Science & Technology • Year 2
Offensive security researcher with a passion for breaking things (ethically). CTF player for PUST_Intruders, ranked #58 nationally on TryHackMe with a 250+ day streak. Building open-source security tools and pushing toward Expert (1600+) on Codeforces.
Started CSE at PUST
TryHackMe Top 1% globally and #58 in BD, BDSec CTF, Meta Hacker Cup
EWU National Robofest Onsite 16th (first-ever from PUST), IH CTF 35th, 300+ Day Streak, Building Echo & NetForge
Tech Arsenal
Kotlin
Primary language for Echo P2P
→ EchoC++
CF rated 1446, 300+ problems
→ Competitive ProgrammingPython
Exploit dev, scripting, recon
→ CTF & AutomationRust
Memory-safe network tools
→ NetForgeFlutter
Cross-platform UI for Echo
→ Echo MobileJavaScript
XSS research, web pentesting
→ Web ExploitsC
Low-level systems programming
→ Systems & OSSQL
Injection research & hardening
→ DB SecurityProject Arsenal
// Open-source tools built for offensive security, encryption, and systems programming
NetForge
ActiveIndustry-grade data processing tool with a stealth calculator disguise. Features a comprehensive cryptographic toolset including Base64, Hex, ROT13, XOR, MD5/SHA hashing, and a recipe system for chaining operations.
FSociety Lab v2
A vulnerable-by-design local-first cybersecurity training target that simulates a real-world web app. Built to be scanned, probed, and attacked — your personal punching bag for Kali Linux tools.
Vault 7
A cross-platform encrypted vault application built with OpenGL/GLFW and C. Features a custom-rendered GUI for securely storing passwords, backup codes, and notes with master-key encryption.
PDF Locker
A cross-platform application to password-protect PDF documents with AES encryption. Features a modern drag-and-drop interface with a Windows 11-inspired design and dark mode support.
Echo
A decentralized peer-to-peer messaging platform with end-to-end encryption. Built with a custom protocol layer for direct device communication without centralized servers.