About Me

Hello! I’m Rayn, an offensive security professional specializing in Active Directory attacks, vulnerability research, and offensive tool development. I have discovered and disclosed multiple CVEs in widely used open source security tooling and competed at the national level in collegiate penetration testing. I currently work as an AI/ML Engineer at Cisco, with a background in red teaming and penetration testing.

Certifications

Experience

AI/ML Engineer Cisco

Oct 2026 – Present

Senior Red Team Engineer Cisco

May 2026 – Oct 2026

Penetration Tester Dakota State University

May 2025 – Oct 2026

SOC Analyst KBR, Inc.

Feb 2024 – Jan 2026

Competitions

CPTC — Collegiate Penetration Testing Competition Global Champions

Wild West Hackin' Fest Black Badge · 1st Place

CyberSports CTF 1st Place

IEEE CARS CTF 3rd Place

CVE Research

CVE-2026-27884 — NetExec Path Traversal CVSS 5.3

CVE-2026-28226 — PhishingClub SQL Injection CVSS 6.5

What you will find here

Original CVE research and responsible disclosure writeups
Active Directory and Windows attack technique breakdowns
Penetration testing tools and proof of concepts
CTF writeups and challenge walkthroughs

Reach out

Latest Posts

The NetExec Hackback (CVE-2026-27884) — Mar 12, 2026
Exploiting Office 365 Direct Send for Internal Phishing — Aug 20, 2025
Encrypting your payload — Apr 27, 2025