Founder & CEO — Zickrock

Mahir Shahriar
Tanshen

Building Zickrock, an education development system for modern institutions — with a hacker's eye for detail. Offensive security specialist, penetration tester & backend developer from Bangladesh.

Role Founder & CEO
TryHackMe Top 1%
Experience 2+ Years
Base Bangladesh
Get In Touch Visit Zickrock
Mahir Shahriar Tanshen - Founder and CEO of Zickrock, Cyber Security Expert
mahir@zickrock: ~
$ whoami
mahir_shahriar_tanshen
$ cat role.txt
[+] Founder & CEO @ Zickrock
[+] Offensive Security Specialist
[+] Penetration Tester
[+] Backend Developer
$ curl -I zickrock.com
HTTP/2 200 — education development system online_
/01

About

Mahir Shahriar Tanshen is the Founder & CEO of Zickrock — an education development system that helps daycares, schools, colleges, universities, coaching centers, and training institutions automate operations, track student development in real time, and manage communication between teachers, parents, and administrators.

Before founding Zickrock, he worked as a Cyber Security Engineer at Cyber Bangla and as a Backend Developer for RIGHTBIZ LTD in London. He is ranked among the top 1% on TryHackMe globally, with deep hands-on expertise in web application penetration testing, red team operations, and ethical hacking.

That security-first background now shapes how Zickrock is built: institutional data handled with the same rigor he once used to break into systems — applied to protecting them.

Mission

Build intelligent, secure infrastructure for education — and keep contributing to a safer digital world through offensive security research.

Education

Diploma in Computer Science
Institute of Engineering and Technology, Rangpur
2021 — 2026

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Technical Arsenal

Offensive security at the core — backed by networking, cloud, infrastructure, and development expertise.

Offensive Security

Core Expertise
  • Web Application Penetration Testing
  • Network Penetration Testing
  • Red Team Operations
  • Vulnerability Assessment & Exploitation
  • Malware Analysis
  • CTF & Adversary Simulation
Main Tools
Burp Suite Metasploit Nmap SQLMap Nuclei ffuf Hydra John the Ripper Hashcat Kali Linux

Network Security

Analysis & Defense
  • Network Traffic Analysis
  • Firewall Configuration & IDS/IPS
  • Network Reconnaissance & Mapping
  • VPN & Secure Tunneling
Main Tools
Wireshark tcpdump Nmap Netcat Bettercap iptables

Cloud Security

Secure Cloud Infrastructure
  • Cloud Infrastructure Hardening
  • WAF & DDoS Protection
  • IAM & Access Control
  • Container Security
Main Tools
AWS Cloudflare Docker DigitalOcean Fail2Ban

Server Management

Linux & Infrastructure
  • Linux Server Administration
  • Web Server Setup & Hardening
  • SSL/TLS & DNS Management
  • Monitoring, Backups & Recovery
Main Tools
Debian / Ubuntu Nginx Apache MySQL cPanel / WHM SSH

Development

Backend & Apps
  • PHP Backend Development
  • REST API Design & Integration
  • Database Design & Management
  • Mobile Apps with Flutter
Main Tools
PHP Python Flutter JavaScript MySQL Git

Scripting & Automation

Tooling & Workflows
  • Security Tool Automation
  • Custom Exploit & PoC Scripting
  • Bash & Python Scripting
  • Recon Pipeline Automation
Main Tools
Bash Python Cron Subfinder httpx
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Professional Journey

Founder & CEO

Zickrock Current
July 2025 — Present Dhaka, Bangladesh
  • Founded Zickrock, an education development system for daycares, pre-schools, schools, colleges, universities, coaching centers, and training institutions
  • Leading product vision, strategy, and company operations as CEO
  • Driving development of real-time student development tracking, unified communication, and institutional automation
  • Applying offensive security expertise to keep the platform and institutional data secure

Backend Developer

RIGHTBIZ LTD
May 2025 — June 2026 London, UK (Remote)
  • Backend development using PHP for real business applications
  • Built and maintained reliable server-side systems
  • Wrote clean, efficient, and well-documented code
  • Supported integration with internal systems and third-party APIs
  • Collaborated with remote team members using agile workflows

Cyber Security Engineer

Cyber Bangla
January 2024 — March 2025 Dhaka, Bangladesh
  • Conducted security assessments and penetration testing
  • Identified and reported security vulnerabilities
  • Implemented security best practices and solutions
  • Contributed to the security awareness program
/04

Recognition & CTF

TryHackMe — Top 1%

Ranked among the top 1% of users globally on TryHackMe, demonstrating exceptional skills in penetration testing, CTF challenges, and cybersecurity concepts.

Global Ranking Hands-On Labs

Cyber Security Club CSE-UAP CTF

Participated in the Capture The Flag competition organized by Cyber Security Club of CSE-UAP, solving complex security challenges.

CTF Competition Web Security

Al-Khwarizmi CTF

Competed in Al-Khwarizmi CTF, tackling challenges across various domains including cryptography, reverse engineering, and web exploitation.

International CTF Multi-Domain
/05

Certifications

Jr Penetration Tester

TryHackMe

Comprehensive penetration testing learning path covering reconnaissance, exploitation, and post-exploitation techniques.

View Certificate

Advent of Cyber 2023

TryHackMe

Annual cybersecurity challenge event covering various security topics including log analysis, malware analysis, and web exploitation.

View Certificate

Web Fundamentals

TryHackMe

Core web security concepts including HTTP, web applications, and common vulnerabilities like XSS, SQLi, and authentication bypasses.

View Certificate
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Frequently Asked Questions

Who is Mahir Shahriar Tanshen?

Mahir Shahriar Tanshen is the Founder & CEO of Zickrock, an education development system for modern institutions. He is an offensive security specialist, penetration tester, red team operator, and backend developer from Bangladesh, ranked in the top 1% on TryHackMe.

What is Zickrock?

Zickrock is a next-generation education development system designed for daycares, pre-schools, schools, colleges, universities, coaching centers, and training institutions. It connects learning, development, communication, and management into one intelligent platform — with real-time student development tracking, unified teacher-parent-administrator communication, smart notifications, and institutional automation. Zickrock is based in Dhaka, Bangladesh. Visit zickrock.com to learn more.

What does Mahir specialize in?

Offensive security is his core expertise — web application penetration testing, red team operations, and malware analysis — along with network security, cloud security, Linux server management, and PHP/Python backend development. His main tools include Burp Suite, Nmap, Metasploit, SQLMap, and Wireshark.

What is Mahir's professional background?

He worked as a Cyber Security Engineer at Cyber Bangla (January 2024 – March 2025), then as a Backend Developer at RIGHTBIZ LTD, London, UK (May 2025 – June 2026). In July 2026, he founded Zickrock, an education development system, where he serves as Founder & CEO.

How can I contact Mahir Shahriar Tanshen?

Email [email protected], connect on LinkedIn, or reach out through zickrock.com.

/07

Let's Connect

Email

[email protected]

Company

zickrock.com

LinkedIn

linkedin.com/in/0xmahir

GitHub

github.com/mahirshahriartanshen

Twitter / X

x.com/mahirshahriar66

Location

Rangpur Division, Bangladesh
// Open to conversations

Talk security, education technology, or partnership.

Whether it's about Zickrock, a security question, or a collaboration idea — the inbox is open.

Send Message