CORE SECURITY CONSOLE v3.5.0
SYSTEM POSTURE: HYPER-SECURE

Securing Digital Frontiers.

Vulnerability researcher & offensive security specialist. Securing corporate infrastructure through rigorous penetration testing, proactive threat modeling, and defensive architecture.

Sagar Majumdar
PORT: 443 [OPEN]
INTEGRITY: OK
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Security Profile

As a cybersecurity professional and penetration tester, I combine deep technical expertise with a holistic understanding of enterprise threat surfaces. I specialize in identifying system weaknesses, simulating advanced persistent threats, and delivering actionable hardening roadmaps.

Beyond consulting, I direct authorized computer education programs, shaping curriculum for Web Application Security, CCA, and Web Development. My objective is to bridge the gap between architectural vulnerability and defensive resilience.

0 Years Exp
0 Bugs Disclosed
0 Students Taught
security-profile.json
01 const specialist = {
02 name: "Sagar Majumdar",
03 role: "Cyber Security Professional",
04 focus: [
05 "Penetration Testing",
06 "Red Teaming",
07 "Securing Infrastructures"
08 ],
09 os: ["Kali Linux", "Arch", "RHEL"],
10 activeCertifications: true
11 };

Cyber Terminal

sec-guest@sagarmajumdar: ~
Initializing SagarOS Console interface...
Type help for a list of available cybersecurity commands.
sec-guest@sagarmajumdar:~$

Technical Matrix

Offensive Protocols

Penetration Testing 90%
Ethical Hacking 85%
Vulnerability Assessment 88%

Defensive Matrix & Auditing

Network Defense / Wireshark 82%
Web Application Security 86%
Metasploit & Exploitation 85%

Operations Log

Sep 2021 - Present

Manager (Technical Operations)

M Interior | Design Studio

Directing operational logistics and network deployment for modular manufacturing systems, overseeing internal infrastructure security.

Dec 2024 - Present

Branch Head

CBCE HABRA

Supervising authorized computer training, managing local network infrastructure audits, and delivering technical curriculum.

Aug 2024 - Aug 2025

Cyber Security Mentor

Superprof

Delivered structured security lectures, mentoring students worldwide in secure coding, Linux networking, and ethical hacking.

Mar 2024 - Aug 2024

Teaching Faculty

Central Board of Computer Saksharta Mission

Lectured Web Application Security (Level 1 & 2), covering CCA, DCA, and core defensive programming strategies.

Feb 2022 - Oct 2022

Junior Security Tester

Docktape Technologies

Conducted contract-based vulnerability assessments and internal security mapping under senior engineers.

May 2021 - Oct 2021

Internship Trainee

HCL Technologies

Assisted with network auditing protocols, threat classification, and secure operating system imaging.

Case Studies

Enterprise Pentesting
Privacy Protection Networking

Ultimate Privacy Leak Detector

Check it Live

A comprehensive, client-side browser forensics tool that reveals every piece of information a website can extract from your browser. Built for privacy-conscious users, security researchers, and anyone who wants to verify their VPN, Tor, or privacy setup.

Vulnerability Scanner
Python Socket Programming

Automated Perimeter Scanner

Check it Live

A custom asynchronous port-auditing and network banner analyzer script that checks vulnerabilities matching active CVE databases.

Web Hardening
Password Protection Privacy Protection

Custom Wordlist Generator

Check it Live

Testing your own accounts and systems Security audits with explicit written permission Educational purposes and security research Strengthening your own password practices

Certifications

CC Domain 1: Security Principles

ISC2 Oct 2025 - Oct 2028 ID: b526dda8-0743-43ed-8554-cb1bf32c0bd6

CC Course Pre-assessment

ISC2 Oct 2025 - Oct 2028 ID: b526dda8-0743-43ed-8554-cb1bf32c0bd6

Cisco Certified Ethical Hacker

Cisco Networking Academy Sep 2025 CCE-H Credential

ICIP | Critical Infrastructure

OPSWAT Academy Sep 2025 CIP Specialist Path

OCFA | Cybersecurity Fundamentals

OPSWAT Academy Apr 2024 OCFA Associate

Make In-house Hacking Lab

CodeRed (EC-Council) Aug 2025 ID: 430183

Android Bug Bounty: Hunt Like a Rat

CodeRed (EC-Council) Aug 2025 ID: 428720

SQL Injection Attacks

CodeRed (EC-Council) Aug 2025 ID: 427078

Introduction to Cybersecurity

Cisco Networking Academy Jul 2025 Path Finder Course

Diploma in Digital Photography

Alison Academy Nov 2024 Visual Art & Media

Initiate Contact

Securing Your Digital Assets

Ready to evaluate your company's perimeter or interested in organizing technical threat mentoring workshops? Send details for a complete assessment scoping.

Base Location Habra, West Bengal, India
Secure Mail sagarmajumdar225@gmail.com
Secure Chat +91 6296600565