Sufian Adnan

About Sufian Adnan

IT Analyst who improves systems by cutting recurring access issues, tightening identity controls and reducing SIEM noise through practical log investigation. Experienced supporting mixed Windows/Linux environments, correcting Azure AD permission gaps, stabilizing VPN and DNS flows and automating time-consuming checks with PowerShell. Known for clear documentation, steady incident handling, and delivering fixes that help teams avoid repeat problems and maintain predictable uptime.

Experience

1. IT Analyst

   Fortinet

   Sep 2025 — Present · CA, US

   Reduced recurring Windows/Linux access and stability issues 27% by correcting AD group structures, tightening GPO scope and fixingDNS/DHCP conflicts across production systems. Lowered SIEM alert noise 34% by tracing Splunk and Forti SIEM events through firewall and endpoint logs, allowing security teams to focus onvalidated threats. Cut network configuration incidents 22% after reorganizing Fortinet, Palo Alto and Cisco ASA firewall rules and removing outdated or conflictingentries. Saved 9–12 hours weekly by writing PowerShell and Bash scripts that automated patch verification, log extraction and baseline checks. Shortened incident recovery time 18% by coordinating investigations with Security, DevOps and Network teams and producing clear RCA notesadopted in future responses.

Education

• Father Michael McGivney Catholic Academy

  High School Diploma

  2016 — 2020

• Seneca Polytechnic

  Honours Bachelor of Information Technology – Cybersecurity

  2020 — 2025