×
Krystyna Botvynko

Krystyna Botvynko

Cadet | Cybersecurity & Web Development Learner
Kyiv, UA
tina.wionsa@gmail.com
Ukrainian (Native), English (STANAG 6001: L1, S1+, R1, W2)

Background

About

About

5th-year Master’s cadet at the Institute of Special Communications and Information Protection of the National Technical University of Ukraine 'Igor Sikorsky Kyiv Polytechnic Institute' and an active CTF participant known as 'wionsa'. I am currently exploring various fields within cybersecurity and web development to determine my professional focus. Dedicated to combining technical curiosity with military discipline, I am highly motivated to develop my skills through practical experience and continuous learning.

Work Experience

Work Experience

  • Team Member (milworms) / Individual Participant (wionsa), Cybersecurity Competitions & Hackathons

    - Present

    Gaining practical experience through participation in cybersecurity events and development challenges

    • 2nd Place - Cybersecurity Hackathon: Defenders in Action

    • 2nd Place - SHE DEFENDS: CYBER & OSINT Hackathon

    • 3rd Place - CTFLviv 2025

    • 3rd Place - Kharkiv Regional CTF v2.0

    • Participant - NASA Space Apps Challenge

    • Participant - CTF for Women

    • Participant - International Programming Proggy-Buggy Contest 2025

    • Participant - AI in Cybersecurity: The New Frontier Forum

    • Participant - OSINT Tournament by Molfar Intelligence Institute

    • Participant - First National CTF Challenge

Projects Experience

Projects Experience

  • AI-Powered Phishing Detection System

    - Present

    A software module developed as a Bachelor's thesis to automate the detection of phishing emails using a multi-layered security approach

    • Integrated VirusTotal API v3 for real-time URL and file attachment reputation scanning

    • Implemented heuristic analysis using LLMs (via g4f) to identify manipulative language and social engineering patterns

    • Developed a robust Flask-based backend with SSL/TLS (HTTPS) support for secure data transmission

    • Built a Chrome extension for seamless browser integration and real-time email analysis

Skills

Skills

  • Knowledge Areas (Academic)

    OSINT

    Digital Forensics Basics

    Cryptography Fundamentals

    Network Security

    Linux Basics

    Virtualization

  • Programming & Web (Basics)

    Python

    SQL

    HTML/CSS

    JavaScript

    Basic C/C++

    Java

  • Military Training (ISCIP)

    Tactical Medicine

    Firearms Training

    Military Topography

    Basic Tactical Training

Education

Education

  • Computer Science (F3), Master's Degree (In Progress), Institute of Special Communications and Information Protection (ISCIP)

    Aug, 2025 - Dec, 2026

  • Computer Science (122), Bachelor's Degree (with Honors), Institute of Special Communications and Information Protection (ISCIP)

    Aug, 2022 - Jul, 2025

Certificates

Certificates

  • SQL, Sololearn

    Issued on: Jun 24, 2022

  • Introduction to IoT, Cisco Networking Academy

    Issued on: Feb 21, 2023

  • Introduction to Cybersecurity, Cisco Networking Academy

    Issued on: Mar 02, 2023

  • Get Connected, Cisco Networking Academy

    Issued on: Mar 08, 2023

  • CCNAv7: Introduction to Networks, Cisco Networking Academy

    Issued on: Apr 04, 2023

  • CCNAv7: Switching, Routing, and Wireless Essentials, Cisco Networking Academy

    Issued on: Jun 09, 2023

  • Introduction to Python, Sololearn

    Issued on: Oct 28, 2023

  • Introduction to Dark Web, Anonymity, and Cryptocurrency, EC-Council

    Issued on: Jan 16, 2024

  • Android Bug Bounty Hunting: Hunt Like a Rat, EC-Council

    Issued on: Jan 16, 2024

Interests

Interests

  • Cybersecurity Events

    CTFHackathonsCybersecurity Forums

  • Military Events

    Tactical MedicineMarksmanshipMilitary Forums