Rekhanjali Koya

About

I am a third year Computer Science student with a strong interest in cybersecurity and ethical hacking. Currently, I am exploring topics such as network security, vulnerability assessment, linux and basic Python programming. I enjoy solving logical problems and continuously improving my technical skills through projects and online learning. I am eager to gain practical experience and build my career in cybersecurity.

Experience

• Junior security analyst
  Hacktech
  Jun 2026 – Jul 2026
• Python programming intern
  CodSoft
  May 2026 – Jun 2026

Education

• Btech (Computer Science)
  Amity University Gurugram · Amity University Gurugram
  Computer science with cybersecurity · Aug 2024 – Aug 2028

Skills

• SQL
• C++ Programming
• GitHub
• Computer Networking
• Management
• Linux
• Cybersecurity
• Nmap
• Ubuntu
• English Communication
• Python Programming
• C language
• Data Structures and Algorithms
• Algorithm Design
• Vulnerability Analysis

Projects

• Simple Calculator ↗
  Python

  Capable of performing standard arithmetic operations

• Password Generator ↗
  Python

  The password generator allows users to: ✔ Choose desired password length ✔ Generate strong and random passwords ✔ Ensure security by including letters, digits, and special characters

• Contact book application ↗
  Python

  The application supports: - Adding, viewing, searching, updating, and deleting contacts - Storing details like phone number, email, and address - A simple menu-driven interface for better usability

• Networking scanning with nmap on kali Linux ↗
  Linux (os), nmap

  I explored how devices in a local network respond to different scan types and commands, including: 🔹 nmap 192.168.x.x – basic host discovery and scanning 🔹 sudo nmap 192.168.x.x – running scans with elevated privileges for more detailed results 🔹 Network-wide scanning to identify active hosts and open ports.

• UFW (Uncomplicated Firewall ↗
  UFW, linux(os)

  In this project, I: • Installed and configured UFW (Uncomplicated Firewall) • Allowed secure access via SSH (port 22) • Blocked HTTP traffic (port 80) to understand traffic filtering • Enabled and verified firewall rules in action • Automated the entire setup using a Bash script

• Damn vulnerable web Application (dvwa) ↗
  Linux, dvwa, sql injection

  Tested how a simple input field behaves with normal input vs a crafted payload: 1' OR '1'='1

• Red team vs blue team security lab (attacker vs defender) ↗
  Linux,ubuntu,nmap,dvwa,ufw, fail2ban

  Red Team (Attacker – Kali Linux): Performed reconnaissance using Nmap, exploited SQL Injection and Cross-Site Scripting vulnerabilities on a DVWA target 🔵 Blue Team (Defender – Ubuntu): Configured UFW for firewall logging and Fail2Ban for automated intrusion prevention, then analyzed logs to detect and correlate the attacks Both machines ran on an isolated internal network in VirtualBox — a safe, controlled environment to learn how attacks actually happen and how defenders detect them.