Julian Purgahn

Summary

Aspiring cybersecurity professional with a focus on blue team operations and threat intelligence. Strong foundational knowledge in InfoSec including traffic and log analysis, SIEM monitoring and rule creation, Endpoint Detection and Response (EDR), threat hunting using frameworks such as MITRE ATT&CK and the Cyber Kill Chain. Excellent problem-solving skills. Open-minded, passionate, and eager to learn.

Experience

IT Helpdesk Technician - Berkshire Hathaway Automotive (TX)

Sep 2024 - Present

• Provided technical support to over 10,000 end-users in 93 locations, troubleshooting hardware, software, and network issues.
• Monitored and analyzed system logs to identify anomalies and potential security threats.
• Leveraged SIEM to investigate alerts, analyze logs, and generate scheduled reports.
• Assisted in Endpoint Detection and Response (EDR) management and monitored MDR cases.
• Collaborated with IT Security Analyst to remediate Proofpoint-related incidents.
• Managed Active Directory OU structures, user creation, and permission changes.

Home Lab – Security Operations & Threat Hunting Project

• Built a virtual SOC using Proxmox and Security Onion to simulate security workflows.
• Used Elastic Stack for real-time log analysis and threat detection.
• Simulated attack scenarios (PowerShell abuse, lateral movement, persistence) to test detection and hunting skills.
• Refined detection logic using real-world methodologies.

Core Competencies

Education

University of North Texas | Denton, Texas – May 2024

Bachelor of Science | Cybersecurity | ABET Accredited