Cybersecurity Explorer & Researcher

Teresa
Jency Bala

MSc @ Khulna University · VAPT · SIEM · Web Security · ML Research

Navigating the cyber realm with curiosity, grit, and a sparkle ✨ from penetration testing and malware removal to machine-learning-based intrusion detection and published research.

💎 💎
Teresa Jency Bala
01

About Me

💎

I am Teresa, a cybersecurity practitioner, researcher, and CS student based in Khulna, Bangladesh. Currently pursuing my Master's at Khulna University with a perfect TGPA of 4.00/4.00 in my first year.

My work spans both offensive and defensive security: VAPT engagements, SIEM deployments (Wazuh and Splunk), website malware removal, and published research on ML-based intrusion detection and IoT security. I have 6 publications including 4 book chapters with Springer, Routledge, and CRC Press.

Level-1 seller in Fiverr. And I have helped clients across the globe secure their WordPress sites, blacklist removal, SEO spam cleanup, and full hardening. I believe every great defense starts with genuinely understanding the attack ✨

30+
Websites Secured
4.00
MSc TGPA at KU
6
Publications
3.65
BSc CGPA, Dean's List
02

Technical Skills

Security and SIEM
WazuhSplunkBurpSuiteKali LinuxVAPTOSINTMalware RemovalTryHackMe
Programming and Data
PythonNumPyPandasMatplotlibSeabornJavaC / C++SQL
Web and DevOps
HTML/CSS/JSLaravelMySQLMongoDBGit / GitHubPostmanWordPress
Tools and Platforms
Linux (Ubuntu)VMware / VBoxGoogle ColabJupyterVSCodeMS OfficeReport Writing
03

Experience

💎
Sep 2023 to Present
Freelance Cybersecurity Specialist
Fiverr, Level 1 Seller
Delivering web security solutions to clients globally. WordPress malware removal, full security hardening, Google blacklist removal, SEO spam cleanup, and VAPT engagements. Successfully secured 30+ compromised websites across IONOS and InMotion hosting.
WordPress SecurityMalware RemovalVAPTBlacklist RemovalSEO Spam
Dec 2023 to Jan 2024
Security Intern
WebBattalion, Remote under CodemanBD
Hands-on experience in Red Team and Blue Team operations. Implemented Wazuh as SIEM/EDR, learned threat monitoring workflows, and applied defensive and offensive security techniques in a professional environment.
WazuhRed TeamBlue TeamSIEM / EDR
04

Education

M.Sc. in Computer Science and Engineering
Khulna University, Khulna, Bangladesh
Jan 2025 to PresentTGPA 4.00 / 4.00
B.Sc. in Computer Science and Engineering
Imperial College of Engineering, Khulna, Code-385 Rajshahi University Affiliated
Jan 2019 to Oct 2024, Result published on 12th Dec 2024CGPA 3.65 / 4.00Dean's List
Higher Secondary Certificate (HSC)
Navy Anchorage School and College, Khulna, Science English
2016 to 2018GPA 4.83 / 5.00
Secondary School Certificate (SSC)
Jalalabad Cantonment Public School and College, Sylhet, Science English
2014 to 2016GPA 5.00 / 5.00
05

Projects

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🛡
Wazuh as SIEM and EDR
Demonstrated Wazuh integration with Ubuntu and Windows to monitor traffic, detect threats, and visualize security events.
View Report
🔓
Blackbox Pentesting, OSCP Lab
Full blackbox pentest on OSCP lab. Critical vulnerability: Local Admin Access via id_rsa key on a WordPress target.
View Report
🌐
Website Rebuild, libbyblair.com
Recreated a site built with nulled plugins using Elementor and Forminator with full post-launch security hardening.
Visit Site
🧹
Website Security and Malware Removal
Restored and hardened 30+ compromised websites including malware removal, defacement reversal, and backup automation.
Case Study
📺
Study Time with Jency, YouTube
Free undergraduate CS curriculum uploaded during COVID-19. Covers nearly all CSE courses for students across Bangladesh.
Watch Channel
06

Research and Publications

THESIS
Intrusion Detection using Machine Learning Algorithms
Undergraduate Thesis, Imperial College of Engineering Khulna, Rajshahi University, 2024
Investigated and applied multiple ML models for network intrusion detection. Evaluated classification accuracy, false positive rates, and model generalization across diverse attack categories. Highlights
Book Chapters 2025 Additional Publications
2026
Ayontika Das, Swan Mollick, Hirak Mondal, Teresa Jency Bala, Anindya Nag, Anindita Guho
Feature Fusion for Next-Generation AI, pp 51-61, Springer
2025
Ayontika Das, Hirak Mondal, Teresa Jency Bala, Akash Adhikary, Anindya Nag
Generative AI in Neurology, pp 351-364, Taylor and Francis / Routledge

View all 6 publications on Google Scholar   h-index: 1   Citations: 1

07

Services

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🎯
Penetration Testing
VAPT on web apps, WordPress, and custom targets with detailed reporting.
🦢
Malware Removal
Deep scanning and manual removal from infected WordPress servers.
🚫
Blacklist Removal
Clean reputation and remove from Google Safe Browsing blocklists.
🕵
OSINT and Recon
Intelligence gathering on people, organisations, and digital assets.
🔍
SEO Spam Cleanup
Remove injected spam redirects and restore organic search presence.
📊
SIEM Solutions
Wazuh and Splunk setup, rule config, and log analysis.
08

Certifications

💎 Cybersecurity Professionals, ITBI CUET 💎 Cisco, Introduction to Cybersecurity 💎 Cyber Threat Intelligence 101 💎 CodeManBD Internship Certificate 💎 CodemanBD Course Completion 💎 WordPress Malware Removal and Recovery 💎 Cyber Security: White-Hat Ethical Hacking 💎 Data Science Certification, Ostad 💎 Microsoft SQL for Beginners 💎 Master Git and GitHub, Beginner to Expert 💎 Frontend Fundamentals 💎 Ostad, Data Science
09

Achievements

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🏆
PKI Hackathon 2025, 3rd Place (University Level)
CCA Department, ICT Division, Bangladesh. Ranked 1st in the preliminary round and placed 3rd at the university final.
Level 1 Seller on Fiverr
Consistent delivery of web security and pentesting services for global clients, securing 30+ websites to date.
🎓
Dean's List, Rajshahi University
GPA 3.8 in Semester 5 and 3.912 in Semester 6, averaging 3.856/4.00 across 3rd year undergraduate studies.
💡
ICPC Regional 2022, Participant
Team selected in the preliminary round and competed in the ICPC Regional hosted by Green University, Bangladesh.

Off the Clock

🎮
🐾
Pet Buddies
YouTube, animals and pets
🎵
Spotify
What I am listening to
🚕
Crazy Taxi
Casual play 🎮
🎥
Letterboxd
Films I have watched
🌳
Linktree
All my links in one place
10

Get In Touch ✨

Whether you have a security concern, a research collaboration, or just want to connect, my inbox is always open. Let us build something secure and brilliant together 💎

teresajencybala.cse [at] gmail.com