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tperez-sec/README.md

Hey, I'm Thomas Perez 👋

Cybersecurity Graduate · Apple Specialist · US Navy Veteran
📍 Houston, Texas  |  🎓 A.A.S. Cybersecurity — Houston City College '26
🔗 LinkedIn  |  📧 Open to opportunities


🧠 About Me

I'm a cybersecurity grad who actually builds things. Fresh out of the Navy, I've spent the last few years studying security from the ground up; not just theory, but hands-on labs, real attack scenarios, and a multi-VM monitoring system I built from scratch.

At Apple, I've spent 2+ years helping people navigate technology. In the Navy, I learned to stay calm when things get complicated. In the lab, I learned that curiosity and persistence beat talent every time.

I'm looking for my first full-time role in cybersecurity — SOC analyst, IT security, or anything where I get to break things (ethically) and defend them better.


🔥 Featured Project — Watchmen

A passive OT/IT security monitoring system that observes, analyzes, and responds to threats without touching legacy infrastructure.

Built across a 4-VM environment (Ubuntu C2, Alpine network sensor, Windows 10/11 endpoints) with 5 specialized agents:

Agent Role
🦉 Nite Owl Log collector & correlator (Ubuntu)
📡 Rorschach Passive network sensor (Alpine)
🧠 Ozymandias LLM reasoning engine — Ollama llama3.1:8b
The Comedian Auto-response — UFW rules & process killing
🎯 Dr. Manhattan Master orchestrator — routes alerts, maintains state

Alert pipeline: Low → logged · Medium → Mac dashboard · High → Telegram + auto-response
Stack: Python · Ubuntu · Alpine Linux · Windows 10/11 · Sysmon · Winlogbeat · Ollama · Telegram API


📁 Other Projects

🔐 Authentication & Password Security

Built a SHA256 hash generator and dictionary-based password cracker in Python. Demonstrated why common passwords fall in seconds and how MFA closes the gap.
Python SHA256 Dictionary Attack MFA Concepts

🛡️ Windows System Hardening

Hardened a Windows 10/11 environment — PUA protection, Tamper Protection, firewall configuration, service minimization, and screen lock policies.
Windows Security Firewall System Hardening Defense in Depth

👥 Active Directory — Interns & HR on Domain Controller

XPCyber Challenge · Full Pass 7/7 ✅
Remediated an AD misconfiguration scenario: scoped share permissions, created security groups, disabled unauthorized accounts, and restricted workstation logons.
Active Directory NTFS Permissions Access Control Domain Administration

🔑 Strengthening System Security

XPCyber Challenge · 2/3 ✅
Implemented SSH public key authentication across multiple servers and configured OTPW one-time password authentication on a backup server.
SSH Public Key Auth Linux OTPW

💾 Dangerous Drives — Infected USB Analysis

XPCyber Challenge · Full Pass 8/8 ✅
Identified and removed malware from a suspicious USB drive while preserving file integrity across all 4 clean files. Forensics analyst workflow.
Malware Analysis File Integrity Digital Forensics Virus Scanning


🛠️ Skills & Tools

Languages     Python · Bash
OS            Ubuntu · Alpine Linux · Windows 10/11 · macOS
Security      Sysmon · Winlogbeat · UFW · Windows Defender · Active Directory
Concepts      Network Monitoring · System Hardening · Access Control · Threat Detection
Platforms     XPCyber · VirtualBox/VMware · Ollama · Telegram API

🎖️ Background

  • 🇺🇸 US Navy Veteran — discipline, mission focus, working under pressure and team-collaboration
  • 🍎 Apple Specialist (2023–Present) — device configuration, customer solutions, operations

"Security isn't a product, it's a process." ; I'm here for all of it

Popular repositories Loading

  1. tperez-sec tperez-sec Public

  2. tperez-sec.github.io tperez-sec.github.io Public

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