Pablo Ruiz Lezcano

Breaking systems to understand them. Building apps to make them better.

Cybersecurity engineer specializing in reverse engineering and network protocols. Alongside my work, I design and build software, turning ideas into real products.

Projects

(View All)

  • Komic

    iOS comic/manga reader app for your Komga server.

    Swift, SwiftUI

  • Click

    Mac app for mechanical keyboard typing sounds.

    Swift, SwiftUI

  • Legato

    The manager for your Ableton projects.

    TypeScript, React, Electron

  • MARISSA

    MessAge foRmat Inference with Similarity digeSt Algorithms.

    Python, pandas, scikit-learn

Experience

  • Cybersecurity Researcher

    Sept 2024 - Dec 2025

    University of Zaragoza - RME-DisCo Research Group

    • Analyzed malware network traffic to identify anomalous behavior, exploits, and associated CVEs
    • Researched and reverse engineered unknown network protocols
    • Developed Python tools for protocol message format inference and traffic analysis

Certifications

  • Ethical Hacker

     Aug 2025

    Cisco Network Academy

    Training and certification on penetration testing, ethical hacking and cybersecurity defense

Education

  • University of Zaragoza

     2019 - 2024

    Bachelor of Science in Telecommunications Technology Engineering

    Specialised in Telematics

Recent Writings

(sometimes I write things)