Vulnerability Assessment & Penetration Tester | SecureX Digital (Self-initiated)

Cybersecurity Specialist

Expert in Vulnerability Assessment (VAPT), Bug Hunting, Application Security & Infrastructure Hardening. Helping companies secure their operations proactively.

VAPT Bug Hunter Digital Forensics Python
Let's Connect My Work
root@logesh-portfolio:~
logesh@kali:~$ whoami
Logesh S - Cybersecurity Specialist
logesh@kali:~$ cat current_focus.txt
> VAPT > Bug Hunting > Forensics > Network Security
Type 'help' to see all commands.
logesh@kali:~$

About Me

Summary

Cybersecurity Specialist and Penetration Tester skilled in Python, offensive security methodologies, and building secure full-stack infrastructures. I lead comprehensive VAPT audits and deploy secure technological solutions for businesses.

I excel at actively discovering vulnerabilities before attackers do, adapting to evolving threats, and managing high-stakes client environments. I bring over 2.5 years of hands-on security and development experience to the table.

Whether you need an exhaustive security audit or are looking to hire a dedicated professional who combines an offensive mindset with hands-on experience, let's connect.

Quick Info

Education

B.E CSE (Cybersecurity) @ SSMIET
2023 - 2027

Experience
VAPT Specialist (Present) Freelance Dev (2.5 Yrs)
Location

Dindigul, Tamil Nadu, India

Technical Toolkit

Offensive Security & VAPT

Vulnerability Assessment (VAPT) Penetration Testing Bug Bounty Hunting OWASP Top 10 Threat Detection Red Teaming

AppSec & Network Security

Web Application Security API Security Testing Network Security Analysis AuthN & AuthZ Testing Secure Coding Controls Security Documentation

Security Tools

Burp Suite OWASP ZAP Nmap Nikto Wireshark Metasploit

Programming & Scripting

Python SQL JavaScript Shell Scripting

Web Technologies

HTML5 / CSS3 Node.js REST APIs WebSockets JSON-LD / SEO

Infrastructure & DB

Linux / Kali MongoDB MySQL Cloud (GCP / IBM) Server Deployment

Dev & Version Control

Git / GitHub Debugging Unit Testing Technical Docs

Professional Skills

Leadership Problem Solving Analytical Thinking Technical Writing

Technical Write-ups

Read More on Medium

Experience Log

Jan 2026 - Present

Vulnerability Assessment & Penetration Tester

SecureX Digital (Self-initiated)

  • Performed VAPT on web applications, identifying security flaws and misconfigurations based on OWASP Top 10.
  • Implemented secure coding practices (authentication, input validation, API security).
  • Delivered secure and optimized web solutions with a focus on performance and protection.
July 2023 - Dec 2025

Freelance Developer

Self-Employed

  • Developed and delivered custom Python-based automation and Telegram bots for corporate clients, optimizing their operational workflows.
  • Managed end-to-end delivery of technical solutions and secure website launches for diverse clients.

Bug Bounty Hall of Fame

A record of responsible disclosures and recognized security contributions.

Program / Company Vulnerabilities Disclosed
Healthcare Booking Platform
Firestore Full Read/Write Access (No Auth)
Reported / Under Review
Critical
Unauthorized Plan Upgrade (Payment Bypass)
Reported / Under Review
Critical
Mass Data Exfiltration (All Users & Hospitals)
Reported / Under Review
Critical
Exposed API Key & Session ID in URL
Reported / Under Review
High
IDOR via Predictable Document IDs
Reported / Under Review
High
Meta Ads / CERT-In
Paid Scam Infrastructure (UPI Fraud)
Reported / Under Review
High
Institutional Feedback Portal
IDOR & Broken Access Control (PII Leak)
Acknowledged / Informational
High
E-Learning Platform
Student Data Leak (Sensitive PII)
Pending Responsible Disclosure
High

Internship Experience

Completed

Google Cloud Cybersecurity Intern

Google Cloud | EduSkills | AICTE

Apr - Jun 2026 (8 Weeks) Grade: O (Outstanding)

Successfully completed an intensive 8-week virtual internship. Mastered key domains including cloud security essentials, IAM & RBAC policies, threat detection, network security perimeters, data protection, and incident response on Google Cloud Platform (GCP).

Student ID: STU685cc2f645df21750909686
Certificate ID: 459d87db3ba14f49c396
Verify Certificate

Zero Trust Cloud Security Intern

Zscaler | EduSkills | AICTE

Jan - Mar 2026 (10 Weeks) Grade: O (Outstanding)

Successfully completed an intensive 10-week Virtual Internship focused on zero-trust cloud security architectures, enterprise risk mitigation, and platform enablement.

Student ID: STU685cc2f645df21750909686
Certificate ID: 4bffb976ad1c0e482cff
Verify Certificate

AI & Cloud Intern

Edunet Foundation | AICTE | IBM SkillsBuild

July - Aug 2025 (4 Weeks) Emerging Technologies

Completed intensive training on the IBM Cloud Platform, gaining hands-on experience with Artificial Intelligence and Cloud Computing technologies.

Student ID: STU685cc2f645df21750909686
Internship ID: INTERNSHIP_1748937226683eaa0a58abc

Featured Projects

ReconLab

OSINT & Attack Surface Analysis

Developed a professional-grade passive reconnaissance and OSINT platform. Aggregates DNS record mapping, automated subdomain certificate transparency checks, active security header analysis, and network relation graph visualizations via Vis.js.

Visit Live

Lynx - VAPT Automation Tool

Priority 1 / Security Eng.

Built an advanced tool to automate vulnerability scanning and simulate real-world attacks. Detects SQLi, XSS, LFI using async scanning (aiohttp) and dynamic analysis with Selenium.

TANCAM

Adaptive Traffic System

Developed a real-time traffic system using FastAPI with 3D visualization. Implemented BFS-based emergency routing and WebSocket-based live dashboard.

TalentHub

Enterprise Talent SaaS

Built a secure recruitment platform with role-based access control (RBAC). Automated candidate tracking workflows to improve hiring efficiency.

SSMIET Outreach Dashboard

Institutional Project

Developed and completed the college website dashboard for enhanced outreach. Recognized for outstanding contribution.

Visit Live

ReNewLiv Ecoventures

2nd Paid Project

Developed a clean, responsive, and purpose-driven website dedicated to sustainable solutions for a greener future.

Visit Live

Naga Innovative

1st Paid Project

Designed and launched a professional industrial website. My first commercial project delivered for a client.

Visit Live

Telegram Bot Development

CEO / Freelance

Designed and deployed custom Telegram bots for clients, featuring automated responses and API integrations.

Code Repositories

View All on GitHub

Verified Certifications

VAPT & Offensive Security

Verified VAPT

API Pentesting & Bug Bounty

Infosys Springboard

View Certificate
Network Auth

Wi-Fi Hacker Course

Infosys Springboard

View Certificate
Analyst Verified

Cybersecurity Analyst

Tata / Forage

View Certificate

Cloud & Network Security

Cloud Verified

Google Cloud Cybersecurity

Google Cloud / EduSkills

View Certificate
Zero Trust

Zero Trust Architecture

Zscaler / EduSkills

View Certificate
Fortinet NSE

Fortinet Fundamentals

Fortinet

View Certificate
SecOps Prof

Security Operations

Palo Alto Networks

View Certificate

Cybersecurity Fundamentals

Web Defender

OWASP Top 10

Infosys Springboard

View Certificate
Ethical Hack

Ethical Hacking 101

Infosys Springboard

View Certificate
Foundations

Intro to Cybersecurity

Cisco

View Certificate

Get In Touch

Email Me

[email protected]

LinkedIn

Logesh Shanmugavadivel

Medium

@logeshs45

Location

Dindigul, Tamil Nadu