Root access, but make it ethical.

Hello, I am

Mackenzie Korevaar-Dorsey

Security Engineer | Red Team & CTF Development

I'm a cybersecurity practitioner earning a B.S. in Cybersecurity and Information Assurance at Western Governors University, with CompTIA Security+, Network+, and A+ certifications. As a Security Engineer & Challenge Designer with the Red Team Association, I design custom CTF challenges for competitions like BSides Seattle and rank in the 97th percentile nationally in the National Cyber League.

I bring that same technical rigor to my work in IT and sales, where I've managed network infrastructure and driven measurable operational improvements. Currently looking for security engineering and red teaming opportunities — let's connect.

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Education & Certifications

Education

Western Governors University

B.S. Cybersecurity and Information Assurance

Currently Enrolled | Focus: Network Defense & Offensive Security

Certifications

  • CompTIA Security+
  • CompTIA Network+
  • CompTIA A+
  • LPI Linux Essentials
  • ITIL Foundation

Security Experience

Red Team Association

February 2024 - Present

Security Engineer & Challenge Designer

Security engineer for the Red Team Association, designing and building custom CTF challenges for large-scale security competitions. Responsible for two challenges to date, with additional contributions to the development process for several others.

  • Architected and built a custom FTP exploitation challenge with a pass-the-hash vulnerability for BSides Seattle 2025, including an automated patching solution.
  • Designed and built a Flask-based news platform for BSides Seattle 2026 featuring a custom-engineered vulnerability, complete with companion exploit and patch scripts.
  • Contribute to the design and development process for additional CTF challenges within the organization.

Professional Experience

Columbia Electric Supply

January 2024 - June 2026

Inside Sales & Purchasing Agent

Yakima, WA · On-site

  • Generated sales leads, prepared quotes, and closed deals in the electrical and automation industry, ensuring timely order fulfillment and customer satisfaction.
  • Grew one of the branch's smallest accounts into its second-largest customer.
  • Took on purchasing agent duties in August 2025, managing a 750,000-item catalog and $1.5M inventory alongside sales responsibilities.
  • Cut warehousing fees by nearly 45% by cleaning up poor inventory data management, including identifying a data error that drove an 85% reduction in inventory writedowns.
  • Diagnosed customer electrical and automation issues to support the sales process.
  • Tier 1 IT & Network Security Support: IT point of contact for the branch, including:
    • Led a network infrastructure overhaul: managed switch upgrade, deployment of 5 wireless access points, and a full re-cabling during a branch office relocation.
    • Resubnetted and re-segmented the network during a firewall and switch replacement, tightening internal network boundaries.
    • Administered and troubleshot DHCP, VLAN/WLAN, and VOIP systems, plus routine printer/fax and wireless connectivity issues.
Network Segmentation Subnetting Firewall Administration DHCP / VOIP WLAN / AP Deployment

Projects

CTF Challenge Creator - BSides Seattle 2025

Architected and deployed a custom FTP service exploitation challenge featuring a preconfigured vulnerability in the password hashing algorithm for BSides Seattle 2025, held at Microsoft Headquarters in Redmond with 1,500 attendees.

  • Designed and implemented custom vulnerability from scratch in FTP service source code
  • Deployed across 35 teams, generating 1,490 total flag submissions throughout competition
  • Created source code-based challenge requiring code review to identify and patch vulnerability
  • Developed automated patching script and published comprehensive writeup post-competition
Vulnerability Research FTP Protocol Pass-the-Hash Python CTF Design

CTF Challenge Creator - BSides Seattle 2026

Designed and built "News Clipper," a Flask news platform for BSides Seattle 2026 featuring a custom-engineered vulnerability.

  • Engineered a custom vulnerability for competitors to discover and exploit
  • Built the Flask app with session-based authentication, CSRF protection, and article search
  • Wrote companion exploit and auto-patch scripts to demonstrate and remediate the vulnerability
  • Containerized the challenge and deployed it on shared competition infrastructure
Vulnerability Research Flask Docker Python

Technical Arsenal

Core Competencies

Network Security Architecture Penetration Testing Vulnerability Research CTF Challenge Design API Development Incident Response

Tooling & Languages

Python Flask Docker Database Design Linux / Unix Wireshark Nmap Burp Suite Metasploit Bash Scripting Git

Achievements & Community Service

Academic Honors

  • Honor Society / Dean's List, Western Governors University
  • 97th percentile National Cyber League ranking (171 / 4,678)

Community Service

  • Volunteer, BSides Security Conference
  • Experience Team member, ISSA — A/V and technical support for chapter events
  • 15 years volunteering with Relay for Life

Memberships

WGU Cybersecurity Club ISSA

Get In Touch

Currently looking for new opportunities. Whether you have a question or just want to say hi, my inbox is always open.

Say Hello GitHub