Keith Daniel Tan
IT & Cybersecurity · Las Vegas, NV
CyberCorps SFS Scholar. Security+ certified. Homelab enjoyer.
About
I'm Keith, a UNLV computer science grad (Information Assurance concentration) and NSF CyberCorps Scholarship for Service scholar. My IT career started at my family's internet cafe, fixing PCs and cleaning malware off machines long before I knew what a threat model was.
These days I harden Linux boxes, run a segmented Proxmox homelab, automate the boring parts, and point machine learning at problems that need it. A background in healthcare taught me to treat sensitive data like it matters.
This site is a for-fun side quest. Prefer a regular page? There is a Plain mode link at the bottom.
Experience
Associate in Engineering (part-time), Mission Support and Test Services (NNSS)
May 2025 to present
- Configured scientific Python environments and deep learning dependencies on HPC GPU clusters for reproducible large-scale training.
- Refactored legacy neural network code and data pipelines for local GPU training.
- Built an evaluation pipeline against classical solvers: 87% lower reconstruction error (NMSE) and 0.995 SSIM on synthetic benchmarks.
- Documented every workflow and configuration into a repeatable pipeline so the work outlives the internship.
Cybersecurity Intern (SFS Scholar), UNLV Cyber Clinic
Aug 2024 to May 2025
- Rebuilt a stalled internal web platform in one week: member database and work-hour logging.
- Ran vulnerability assessments and security audits for small businesses, with prioritized remediation reports.
- Presented to 300+ attendees on building campus cybersecurity organizations, as part of NSF SFS outreach.
- Led Security+ prep sessions with practice assessments.
Team Lead & Full Stack Developer Intern, NexOasis
Jan 2024 to Aug 2024
- Architected a Proxmox environment with network isolation and a PHP API that provisions and tears down VMs securely.
- Built role-based identity management, access control, and session validation for the TrustedWill platform.
- Promoted to team lead of five interns to coordinate milestone delivery.
Teaching Assistant, University of Nevada, Las Vegas
Jan 2024 to Aug 2024
- Raised class pass rates by 25% with targeted feedback.
- Ran office hours and review sessions on data structures, algorithms, and debugging.
Projects
The Japan Itinerary
Completed · 2026 · TypeScript, Next.js, Supabase, Vercel, Tailwind CSS, MapLibre
A planner built for one trip: three weeks in Japan for two people. Each day gets an agenda that keeps itself in time order, with maps, photos, hotel reminders, and reservations or receipts one tap away.
It also runs a shared budget ledger (yen or dollars, exchange rate frozen at purchase, who owes whom), packing lists, phrase and emergency cards, leave-by push reminders, and an offline mode that queues edits until there is signal again.
Sign-in, data, realtime sync, and file storage run on Supabase with row level security, so only the people we invite can read it.
Proxmox Cyber Lab
Completed · 2025 · Proxmox VE, Kali Linux, Ubuntu, Windows, Wireshark, WireGuard, n8n
A Proxmox VE lab with network isolation and firewall controls, built for practicing defense, threat modeling, and continuous monitoring.
It runs Windows and Linux VMs for identity management, firewall testing, and monitoring drills, plus security tooling (Wireshark, Fail2Ban, WireGuard, Nginx, n8n) and a couple of game servers with authentication, isolation, and abuse detection.
AI-Enabled Discord Bot
Completed · 2025 · Python, PostgreSQL, SQLAlchemy, Alembic, OpenAI API, Proxmox
Usagi is a Discord bot that answers with OpenAI or a locally hosted LLM. It runs around the clock in a hardened Proxmox container with strict credential isolation and usage controls.
It onboards servers and users automatically, tracks command usage in PostgreSQL, and uses rate limiting and anomaly detection to catch abuse and keep an audit trail.
This Portfolio
In progress · 2026 · TypeScript, Next.js, React, Tailwind CSS, three.js, Vercel
The site you are on: a Next.js and TypeScript app styled after the old-school MMOs I grew up on, with an animated pixel-art landscape, XP drops for exploring, a 3D pet, and a chatbox.
All content lives in typed data files that are checked at build time, all pixel art is generated from code, and the site ships with a strict Content Security Policy. A Supabase guestbook and a sign-in editor for updating content are next.
Skills
Defense
Splunk, Wazuh, TheHive, Velociraptor, Arkime
Offense
Metasploit, Nmap, Hashcat, Ghidra, CTFs
Networking
TCP/IP, DNS, VPNs, Firewalls, IDS/IPS, VLANs, Wireshark
Linux
Ubuntu, Kali, Debian, RHEL, ParrotOS
Windows
Windows 10, Windows 11
Virtualization
Proxmox VE, Docker, VirtualBox
Scripting
Python, n8n, PHP
Vuln Management
Qualys, Security audits, Risk reports
Identity & Access
Role-based access control, Session validation, Identity management
AI & ML
PyTorch, TensorFlow/Keras, scikit-learn, NumPy, CNNs
Hardware
PC repair, PC builds, Malware remediation
Leadership
Team lead (5 interns), TA (120 students), Security+ prep sessions
Tech stack
- Linux (Operating system): Daily driver: Ubuntu, Kali, Debian, RHEL, ParrotOS.
- Proxmox VE (Virtualization): Runs my segmented homelab of VMs and containers.
- Git & GitHub (Version control): Everything I build lives in version control.
- n8n (Automation): Workflow automation for alerts, reports, and chores.
- Python (Language): Scripting, tooling, and machine learning.
- Docker (Containers): Packages services so they run the same everywhere.
- Wazuh & Splunk (Security monitoring): SIEM, log analysis, and alert triage.
- PostgreSQL (Database): Relational data for my bots and apps.
- Wireshark (Network analysis): Packet capture and protocol troubleshooting.
- WireGuard (VPN): Secure remote access into the lab.
- Nmap (Network scanning): Discovery and port scanning during assessments.
Education, certifications, and achievements
- B.S. Computer Science (University of Nevada, Las Vegas, Spring 2026): Information Assurance concentration. 3.736 GPA.
- Research Paper (IEEE submission) (opens in a new tab) (2026): Co-author of "Single-View Tomographic Reconstruction Using Learned Primal Dual", submitted to IEEE Transactions on Computational Imaging.
- CompTIA Security+ (opens in a new tab) (CompTIA): Certified in core security concepts, operations, and incident response.
- NCAE Cyber Games 2025: 3rd Place (2025): Team placed 3rd. Also named Most Improved Teammate.
- Tracer Fire 12 (2024): Competed in hands-on cyber defense exercises.
- CyberCorps: Scholarship for Service (National Science Foundation): Federal cybersecurity scholarship in exchange for government service.
- Dean's Honor List (UNLV, Spring 2020, Spring 2024, Fall 2024, Spring 2025, Fall 2025): Made the list five times.
- Millennium Scholarship (Nevada State Treasurer's Office): Nevada merit scholarship.
- Rebel Scholarship (UNLV): UNLV merit scholarship.
- Intern to Associate in Engineering (Mission Support and Test Services (NNSS), 2025): Converted from MSIPP intern to Associate in Engineering.
- Promoted to Team Lead (NexOasis, 2024): Promoted from intern to lead a team of five interns.
- Speaker: 300+ attendees (NSF SFS outreach): Presented to 300+ attendees on building campus cybersecurity organizations.
- Teaching Assistant: 120 students (UNLV, 2024): Mentored 120 students as a teaching assistant; pass rates rose 25%.