Skip to content
View singhjasvinder001's full-sized avatar
🎯
Focusing
🎯
Focusing

Block or report singhjasvinder001

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Content in all repositories owned by your account will be closed.
Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
singhjasvinder001/README.md

Jasvinder Singh

Cybersecurity Specialist | Penetration Tester | MEAN Full Stack Developer | AI/LLM Security

Header GIF

LinkedIn Website


πŸ‘¨β€πŸ’» Professional Summary

Cybersecurity professional and MEAN stack developer with hands-on experience in penetration testing, network security, and LLM/AI security practices. Founder of Dev Tech Plus, providing security consultancy and full-stack development. Active bug bounty hunter, instructor, and open-source contributor focused on building secure infrastructure tools and protecting modern web application environments.


πŸ› οΈ Core Skills

Category Skills & Technologies
Security Penetration Testing, Vulnerability Assessment, Burp Suite, Identity & Access Management (IAM), Network Security (NAT/PAT, ACLs), Firmware & Reverse Engineering, AI/LLM Security
Programming C, C++, JavaScript (ES6+), PHP, Python
Full Stack (MEAN) MongoDB, Express.js, Angular, Node.js, REST APIs, HTML5, CSS3
Platforms & Tools WordPress, Linux (BlackArch), Cloud Security, Cisco NAT/PAT Configuration, Git
Content & Strategy Project Coordination, Technical Content Strategy, Community Management

πŸ’Ό Experience

Cyber Security Specialist | Freelancer.com (Part-time)

May 2021 – Present

  • Deliver freelance penetration testing and vulnerability assessment services across web, network, and infrastructure environments.
  • Apply security methodologies to identify and remediate vulnerabilities for client platforms.
  • Scope client engagements, communicate technical risks, and meet delivery milestones independently.

Founder | Dev Tech Plus

2021 – Present

  • Founded and manage a technology/security consultancy providing software development alongside infrastructure security testing.
  • Lead development of CloudSphere Hypervisor Platform (v2.4), a multi-node VM and LXC container management platform enabling unified monitoring and orchestration across macOS, Windows, and Linux.
  • Built a zero-dependency Python telemetry agent enabling real-time CPU/RAM stats and safe remote execution behind NAT/CGNAT networks via outbound HTTP polling.

🎯 Security Accomplishments & Community

  • 🎯 Active Bug Bounty Hunter on HackerOne & YesWeHack β€” featured in 18+ Halls of Fame
  • πŸ› οΈ Architecting open-source security tools for the cybersecurity community
  • πŸ“Ή Creator at B1scuit Security on YouTube β€” technical hacking tutorials & security writeups
  • ✍️ Technical writer on Medium covering bug bounty strategies, POCs, and security tips
  • πŸŽ“ Udemy Instructor teaching 8,400+ students
  • πŸ’¬ Lead a Discord community for security researchers and developers

πŸ† Hall of Fame Highlights

Target Severity Vulnerability Type
πŸ”΅ Supabase πŸ”΄ High BAC + Insecure API (Rate limiting & input flaws)
🟠 Zerodha πŸ”΄ High Android + Business Logic + Security Misconfigurations
⚫ Cert-wm.nl πŸ”΄ High Stored XSS via Unrestricted File Upload
🟣 Thinkst Canary 🟑 Medium Mass PII Leak
🟒 Substack 🟑 Medium Race Condition β€” Atomic Increment Manipulation
🟒 GeeksForGeeks 🟑 Medium Mass Assignment Vulnerability
πŸ”΅ Wibmo.com 🟑 Medium IDOR β€” Email Disclosure
🟠 EC-Council 🟑 Medium Email Verification Bypass
🟀 Inflectra.com 🟑 Medium Open Redirect + PII Leak via Input Validation Flaw
🟣 Skillmate.ai 🟑 Medium Security Bypass + Insecure API
πŸ”΅ Samsung πŸ”΅ Low Misconfigured AWS S3 Bucket β€” Data Leak
β™ŸοΈ Chess.com πŸ”΅ Low CWE-657: Insecure Design Violation
🟠 Arcjet.com πŸ”΅ Low CWE-657: Insecure Design Violation
πŸ₯ CK Birla / Ganga Ram / Max Healthcare πŸ”΅ Low Security Bypass + Insecure API

πŸ’° Earned $1,000+ bounty via a private YesWeHack program for critical findings in an Android application's Forgot Password flow.


πŸ† Certifications & Training

  • Certified LLM Security Expert (CLLMSE)
  • Introduction to Microsoft 365 Copilot - Microsoft Learn
  • Cybersecurity Job Simulation - Mastercard (Forage)
  • My OPSWAT Portal Orientation Guide & Introduction to CIP - OPSWAT Academy
  • Burp Suite Pentester - Dev Tech
  • MERN Full Stack - TECHLEARNER

πŸŽ“ Education

Nancy International School, New Delhi

  • Secondary & diploma-level coursework covering Computer Games, Programming Skills, and Web Development.

🀝 Let's Connect

LinkedIn Website

Pinned Loading

  1. urban-os- urban-os- Public

    JavaScript 1

  2. SECRET_MESSAGE-DECODER SECRET_MESSAGE-DECODER Public

    DECODE MESSAGE OF HEX C0DE

    Python 1

  3. TURBO_C_MAC TURBO_C_MAC Public

    Blue background - C code editor with syntax highlighting - Buttons: Compile, Run, Compile & Run, Clear - Output panel at bottom

    Python 1

  4. TRAIL TRAIL Public

    Python 1

  5. nasa-apod nasa-apod Public

    JavaScript 1

  6. adversarial-prompt-gateway adversarial-prompt-gateway Public

    Python 1