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Burpsuite
Burpsuite
CTFs
CTFs
Firebase
Firebase
Fuzz Panel
Fuzz Panel
Injex Shield
Injex Shield
Langchain
Langchain
Linux
Linux
MAC DPIManager
MAC DPIManager
Metasploit
Metasploit
Network Security
Network Security
Nmap
Nmap
Penetration Testing
Penetration Testing
Python
Python
Tag Talk
Tag Talk
Vulnerability Assessment
Vulnerability Assessment
Burpsuite
Burpsuite
CTFs
CTFs
Firebase
Firebase
Fuzz Panel
Fuzz Panel
Injex Shield
Injex Shield
Langchain
Langchain
Linux
Linux
MAC DPIManager
MAC DPIManager
Metasploit
Metasploit
Network Security
Network Security
Nmap
Nmap
Penetration Testing
Penetration Testing
Python
Python
Tag Talk
Tag Talk
Vulnerability Assessment
Vulnerability Assessment

Timeline

Intern - Penetration Tester

Cyber Secured India

India

Conducted black-box security assessments and identified multiple critical vulnerabilities. Documented security gaps across Active Directory, endpoint solutions, and patch management for remediation.

Kali LinuxMetasploitNmapBurp SuiteOWASP Top 10Active DirectoryPowerShellWindows & Linux InternalsVulnerability AssessmentPenetration Testing

Intern - SIEM

Sense Learner Technologies Pvt. Ltd

India

Monitored and analyzed security events using Splunk to support incident investigations. Performed network traffic analysis and assisted in improving firewall, proxy, IAM, and DLP controls.

SplunkSIEMLog AnalysisIncident ResponseNetwork Traffic AnalysisFirewallsProxy ServersIAMDLPTCP/IP

Offensive & Defensive Security Practitioner

HackTheBox, TryHackMe & CTF's

Global

Built strong red and blue teaming expertise through hands-on labs and CTFs, solving 200+ machines. Achieved global rankings in Hack The Box and PicoCTF while strengthening system and network security skills.

Linux Privilege EscalationWindows Privilege EscalationWeb ExploitationNetwork EnumerationActive Directory AttacksBlue Team FundamentalsSOC AnalysisCTFsThreat ModelingMITRE ATT&CK

FeaturedPost

Blog 1
★ Featured

Blog 1

Writeup HTB & THM

• Harsh Kumar • 4 min read
tag_1tag_1

PostCard

Markdown Style Guide (First Post You Need to Check in Astro)

Markdown Style Guide (First Post You Need to Check in Astro)

Here is a sample of some basic Markdown syntax that can be used when writing Markdown content in Astro.

Harsh Kumar
2 min read
Tag_1

Post Meta, Nav, Share

Harsh
Harsh
5 min read
reddit [#143] Created with Sketch.

Skills & Tools

Burpsuite
Burpsuite
CTFs
CTFs
Firebase
Firebase
Fuzz Panel
Fuzz Panel
Injex Shield
Injex Shield
Langchain
Langchain
Linux
Linux
MAC DPIManager
MAC DPIManager
Metasploit
Metasploit
Network Security
Network Security
Nmap
Nmap
Penetration Testing
Penetration Testing
Python
Python
Tag Talk
Tag Talk
Vulnerability Assessment
Vulnerability Assessment
Burpsuite
Burpsuite
CTFs
CTFs
Firebase
Firebase
Fuzz Panel
Fuzz Panel
Injex Shield
Injex Shield
Langchain
Langchain
Linux
Linux
MAC DPIManager
MAC DPIManager
Metasploit
Metasploit
Network Security
Network Security
Nmap
Nmap
Penetration Testing
Penetration Testing
Python
Python
Tag Talk
Tag Talk
Vulnerability Assessment
Vulnerability Assessment

Cybersecurity & Threat Research

Offensive and defensive security experience through real-world assessments, vulnerability discovery, and adversarial threat modeling.

Enterprise Security

Hands-on work with Active Directory, endpoints, patching, IAM, and enterprise security control assessments.

SIEM & Incident Monitoring

Security event analysis and incident support using Splunk, log correlation, and network traffic analysis.

AI & LLM Security

Research on LLM prompt-injection attacks, including offensive testing and mitigation using ML-based defenses.

Offensive Security & CTFs

Strong red and blue teaming skills with 200+ solved labs and global rankings in competitive CTFs.

Systems & Network Security

Practical security testing across Linux, Windows, and networked systems with strong fundamentals.

Work Experience

Intern - Penetration Tester

Cyber Secured India

India

Conducted black-box security assessments and identified multiple critical vulnerabilities. Documented security gaps across Active Directory, endpoint solutions, and patch management for remediation.

Kali LinuxMetasploitNmapBurp SuiteOWASP Top 10Active DirectoryPowerShellWindows & Linux InternalsVulnerability AssessmentPenetration Testing

Intern - SIEM

Sense Learner Technologies Pvt. Ltd

India

Monitored and analyzed security events using Splunk to support incident investigations. Performed network traffic analysis and assisted in improving firewall, proxy, IAM, and DLP controls.

SplunkSIEMLog AnalysisIncident ResponseNetwork Traffic AnalysisFirewallsProxy ServersIAMDLPTCP/IP

Offensive & Defensive Security Practitioner

HackTheBox, TryHackMe & CTF's

Global

Built strong red and blue teaming expertise through hands-on labs and CTFs, solving 200+ machines. Achieved global rankings in Hack The Box and PicoCTF while strengthening system and network security skills.

Linux Privilege EscalationWindows Privilege EscalationWeb ExploitationNetwork EnumerationActive Directory AttacksBlue Team FundamentalsSOC AnalysisCTFsThreat ModelingMITRE ATT&CK

Studies

B.Tech. in Computer Science & Engineering (Cyber Security & Digital Forensics

VIT BHOPAL University, India

Focused on core computer science fundamentals alongside applied cybersecurity. Coursework and projects covered systems, networks, security engineering, and digital forensics, with strong emphasis on real-world problem solving and applied research.

Algorithms Operating Systems Databases Computer Networks Cybersecurity,

Senior Secondary (Class XII) – Science (PCM)

State Board Bihar, India

Completed senior secondary education with a focus on Physics, Chemistry, and Mathematics, developing strong analytical and quantitative foundations.

Physics Chemistry Mathematics

Projects

LLM Prompt Injection Security

Python • Flask • PyTorch • Neural Network • Random Forest

Security research project analyzing prompt-injection vulnerabilities in large language models. Conducted offensive testing on multiple LLMs and built ML-based detection and sanitization mechanisms. Research paper currently under editorial review.

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FuzzPanel

Python • PySide6 • Qt • Multi-tool Integration

Unified GUI platform integrating diverse security assessment tools for comprehensive network reconnaissance and web application testing. Provides centralized execution, real-time monitoring, and consolidated result analysis for multiple security utilities through an intuitive interface.

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Smart Parking Violation System

Flutter • Dart • Java • NoSQL • FireBase

End-to-end mobile application addressing illegal parking conflicts using secure real-time reporting. Implemented complaint workflows, user reporting, and backend logic with focus on data integrity and secure communication.

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HiDPI Display Manager for macOS

Swift • SwiftUI • IOKit • macOS • osascript

Native macOS utility to enable and manage HiDPI (Retina scaling) modes on external monitors. Built with SwiftUI and IOKit, featuring display detection via VendorID/ProductID, custom and preset resolutions, font smoothing controls, and secure execution of privileged display commands through a modern GUI.

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