Alwin Warringa
Senior Ethical Hacker Red Team at DIVD Dutch Institute for Vulnerability Disclosure
Emmen, Drenthe, Netherlands
Summary
👤
Senior🎓
Top SchoolAlwin Warringa is a Senior Ethical Hacker and Red Team specialist with over a decade of hands-on experience in ICT security, blending offensive testing with operational CSIRT leadership. Based in Emmen, he combines a hacker mindset with deep infrastructure roots—networking, monitoring and Linux engineering—which lets him approach security problems from multiple technical angles. He currently splits his time between Sopra Steria’s Red Team work and operational roles at DIVD, while contributing as a freelance security researcher on Zerocopter’s bug-bounty platform. Known for curiosity and creative problem-solving, he thrives both independently and in team settings, and often uncovers systemic issues by tracing problems back to underlying operational practices.
10 years of coding experience
11 years of employment as a software developer
MBO, Systeembeheerder, MBO, Systeembeheerder at Drenthe CollegeBachelor, Information and Communication Technology, Bachelor, Information and Communication Technology at Stenden University
English, Dutch
Github Skills (14)
gundb9
indexer9
microsoft-graph8
azuread8
azure-active-directory8
entra7
python5
methodology4
security4
linux3
server3
hsts3
payload2
microsoft-azure1
Programming languages (4)
Github contributions (5)
sT0wn-nl/CVEs
Mar 2019 - Jun 2022
Contributions:19 commits, 18 pushes, 1 branch in 3 years 3 months
sT0wn-nl/web-csirt
May 2023 - May 2024
https://www.divd.nl and https://csirt.divd.nl websites
Contributions:28 pushes in 1 year 1 month
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