Tiago Brandão

Tiago Brandão, Computer Engineering student at ISEC, Coimbra

Every system gives something away.

Your browser did too, a moment ago. I study what systems reveal, in data and in networks, and how to protect them.

See my work Get in touch

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    01

    Work

    Three things I built in 2026, from data analysis to network security.

    The winter that broke the forecast

    Data analysis, October 2026

    A monthly forecast of electricity use in Espinho from open E-Redes data, tested month by month without looking ahead: it misses by 2.5% on average. Then I investigated a winter jump of up to 10.5%. The cold explains between 11% and 43% of it, depending on the method.

    • Python
    • Open data
    • Forecasting
    Open the interactive analysis
    Code on GitHub

    Monthly use, GWh. Move across the chart.

    2.48%

    mean error

    66

    months of data

    +10.5%

    January 2026

    netlab

    Network security, October 2026

    A network traffic analyser in Python that reads captures of real malware infections and reports who talked to whom, which domains were contacted, and signs of attacks. Tested on two real captures: an infected office computer, and a week of attacks on a public web server.

    • Python
    • scapy
    • Network security
    Code and analyses on GitHub

    Illustration: what one detector looks for

    A person browsing: irregular connections Malware beaconing: the same interval, again and again
    Illustration: connections over time. Normal browsing is irregular; beaconing repeats at a fixed interval.

    In a real capture, it caught a remote-access trojan contacting its server 261 times, almost exactly every 60.1 seconds.

    • Most active hosts
    • Domains contacted over DNS
    • Port scans
    • Beaconing to a command server
    • DNS tunnelling

    SIDEPATH

    Side project, live since August 2026

    Personalised reports on career paths and side income, built from each person's studies and experience.

    • Netlify
    • Tally
    • Gmail
    Visit sidepath.netlify.app

    02

    Skills

    Only what these projects actually use.

    Data

    • Python, standard library and requests
    • Testing forecasts without looking ahead
    • Open data APIs: E-Redes, REN, Open-Meteo

    Security

    • Reading packet captures (.pcap) with scapy
    • TCP/IP and DNS fundamentals
    • Detection rules for suspicious traffic

    Tools

    • Git, GitHub
    • Netlify
    • Claude and Claude Code to build and review

    Studying for a BSc in Computer Engineering (Licenciatura), ISEC, Coimbra. Started in 2026, expected in 2029

    03

    Contact

    Email is the best way to reach me.