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Always studying..
💻
Always studying..
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darioomatos/README.md

Dario Matos · darioomatos

🔴 Offensive Security · Pentest · Red Team · Secure Code Review
🎓 Computer Engineering @ UNIVESP (in progress)
🌐 Based in São Paulo, BR

About

Security practitioner focused on offensive techniques and infrastructure hardening. Background in ISP networking (fiber-optic, L2/L3) — which means I think about attacks at the protocol level, not just the application layer.

Currently: building hands-on labs, and studying Computer Engineering to formalize what I've been doing in practice.

Focus Areas

  • 🔓 Web & network pentesting (OWASP, Burp Suite, nmap, Wireshark)
  • 🏴‍☠️ Red team workflows and custom tooling (Python, Bash)
  • 🖥️ OS-level security: Linux kernel, FreeBSD jails, process isolation
  • 🔍 Secure code review and vulnerability research

Tech

Python Bash PowerShell C
Linux (Manjaro/Debian) FreeBSD Docker QEMU
Burp Suite nmap Wireshark Git Neovim

Certifications & Training

  • 🏴‍☠️ Pentest Profissional — DESEC Security (finalizing)
  • 📚 CompTIA Security+ (in preparation)

Connect

LinkedIn · Mastodon @infosec.exchange · Linktree

Pinned Loading

  1. cve-2026-31431-copyfail cve-2026-31431-copyfail Public

    CVE-2026-31431 Copy Fail - LPE no kernel Linux

    1

  2. uv_cybersec_workflows uv_cybersec_workflows Public

    uv tool + Cybersec Workflows

  3. freebsd-jails-lab freebsd-jails-lab Public

    Laboratório prático com QEMU e jails no FreeBSD para estudos de redes, segurança e isolamento de ambientes Unix-like.

    1

  4. linux-edr-lab linux-edr-lab Public

    Lab de EDR em shellscipt para sistemas Linux

    Shell

  5. comandos-shell comandos-shell Public

    Comandos avançados e pouco conhecidos para Linux com foco em redes, forense e cibersegurança

  6. pfctl cheat sheet pfctl cheat sheet
    1 
    #### General PFCTL Commands ####
    2 
    $ pfctl -d disable                                # packet-filtering
    3 
    $ pfctl -e enable                                 # packet-filtering
    4 
    $ pfctl -q                                        # run quiet
    5 
    $ pfctl -v -v                                     # run even more verbose