Harrison Keithahn

About Harrison Keithahn

I’m a lifelong learner drawn to solving complex problems, and as technology evolves and systems become increasingly connected, maintaining strong cybersecurity practices will become even more critical for protecting data and infrastructure. Through the Google Cybersecurity Professional Certificate, I gained hands-on experience analyzing risks, detecting threats, and investigating incidents with tools like Splunk, VirusTotal, Wireshark, and Burpsuite. I stay sharp in my free time by tackling TryHackMe labs, HackTheBox challenges, and personal homelab projects focused on malware analysis and security automation. I’m eager to leverage this growing skill set to help strengthen organizational security, safeguard sensitive information, and stay ahead of emerging threats.Certifications -CompTIA Security+ CompTIA Network+ Google Cybersecurity Professional Certificate

Experience

1. L1 Help Desk Analyst

   Realnets

   Sep 2025 — Present · Park Ridge, IL, US

   Monitored endpoint security events using SentinelOne, Microsoft Defender, and Darktrace, escalating threats in accordance with incident response procedures• Conducted network switch diagnostics across Cisco and MikroTik environments, and performed Xirrus wireless analysis using heat maps and RSSI data to resolve coverage and performance issues• Provisioned and deployed WireGuard VPN access through OPNsense to support secure laptop onboarding; validated connectivity and documented deployment procedures• Managed user accounts, permissions, and multi-factor authentication within Active Directory and Microsoft Entra ID• Provided end-user and administrative support for Microsoft 365, Intune, and Exchange Online environments• Performed Veeam-based file restorations in response to user requests and incident recovery needs• Administered printer deployments, including DHCP reservations and configuration of Print Server and Microsoft Universal Print

Education

• Coursera

  Google Cybersecurity Certificate

• Carleton College

  Bachelor of Arts - BA, Cinema and Media Studies

  2014 — 2018