Portrait of Niels Van Dorpe
Blue Team

$ whoami

Niels Van Dorpe

Security Analyst @ Orange Cyberdefense

Security Analyst defending organizations against advanced cyber threats. Passionate about blue team operations with a growing focus on purple teaming — understanding the attacker's perspective to build stronger defenses.

Brussels, Belgium

01. About Me

I'm a Security Analyst at Orange Cyberdefense, where I focus on detecting and analyzing security threats across complex enterprise environments. My day-to-day involves working with SIEM platforms, EDR solutions, and network detection tools to keep organizations safe.

My core strength lies in blue team operations — from threat detection and security monitoring to log analysis and threat investigation. I'm continuously expanding my skill set, recently diving deeper into purple teaming methodologies to understand offensive techniques and build more resilient defenses.

Outside of work, I actively participate in CTF competitions and platform challenges to stay sharp and keep learning. I believe the best defenders understand how attackers think.

Focus Areas

Threat Detection Threat Investigation Log Analysis Security Monitoring Purple Teaming Adversary Emulation CTF Competitions Hack The Box

02. Experience

Security Analyst

Orange Cyberdefense

2023 — Present
  • Monitoring and analyzing security events across enterprise environments using SIEM and EDR platforms
  • Investigating security alerts, performing triage and escalation of potential threats
  • Working with Microsoft Defender XDR, Microsoft Sentinel, Cortex XDR, Splunk, Vectra AI, and Cybereason
  • Analyzing threat patterns and improving alert fidelity
  • Collaborating with teams to strengthen organizational security posture
Threat DetectionThreat AnalysisSIEMEDRSOC Operations

03. Certifications

96%

GIAC Defending Advanced Threats

GDAT

SANS / GIAC

August 2025

Verify on Credly : GIAC Defending Advanced Threats credential
Top Score
Gold

Blue Team Level 1

BTL1

Security Blue Team

January 2025

Verify on Credly : Blue Team Level 1 credential
Gold Medal • 90%+

Security Operations Analyst Associate

SC-200

Microsoft

July 2024

Security+ CE

SY0-601

CompTIA

December 2023

Verify on Credly : Security+ CE credential

Core Certified Power User

Splunk

Splunk

October 2023

Verify on Credly : Core Certified Power User credential

Core Certified User

Splunk

Splunk

October 2023

Verify on Credly : Core Certified User credential

04. Tools & Technologies

EDR / XDR

Microsoft Defender XDR
Cortex XDR
Cybereason

SIEM / Analytics

Microsoft Sentinel
Splunk

Network Detection

Vectra AI

Training Platforms

Hack The Box
CTF Competitions

05. Achievements

Huntress CTF 2026

46th out of 1,602 participants

Huntress's annual capture-the-flag competition, against security professionals worldwide.

Top 2.9%

Previous edition: 157th out of 6,869 teams (top 2.3%)

GIAC Advisory Board

Member of the invitation-only GIAC Advisory Board — a forum where top-performing GIAC certified professionals exchange ideas and advise on content-related issues across GIAC programs. Invitations are extended to those who demonstrate exemplary performance on GIAC exams.

06. Education & Languages

HOGENT

System & Network Administration

2020 — 2023

Ghent, Belgium

Languages

Dutch Native
English Full Professional
French Professional Working
German Limited Working

07. Get in Touch

Whether you want to discuss cybersecurity, collaborate on a project, or just connect — feel free to reach out.