Olaf Haalstra
Senior Consultant Cyber Defense & Resilience at Deloitte
New York, New York, United States
Summary
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Senior🎓
Top SchoolOlaf Haalstra is a Senior Consultant in Cyber Defense & Resilience with 11 years of experience specializing in incident response and threat hunting at Deloitte Netherlands. He combines hands-on technical investigation skills with client-facing advisory work, having progressed through roles from consultant to junior manager and now senior consultant. Olaf co-founded a web-focused startup and has full-stack development experience, which gives him practical insight into how software design choices affect security posture. He is committed to knowledge-sharing—co-hosting a cybersecurity podcast and co-organizing the Challenge the Cyber initiative—to make complex topics accessible and to mentor the next generation of defenders. Based in Amsterdam, he blends law-enforcement internship experience at the National High Tech Crime Unit with academic rigor from a Computer Science MS at the University of Twente.
11 years of coding experience
5 years of employment as a software developer
Master of Science - MS, Computer Science, Master of Science - MS, Computer Science at University of Twente
Github Skills (133)
disk-image9
log4j9
command-line-tool9
bitlocker9
driver9
vagrantfile8
log4shell8
endpoint-security8
vulnerability8
bash7
inventory-management7
monitoring7
linux7
database7
rust7
Programming languages (15)
Github contributions (5)
OlafHaalstra/kpn-mb-share
Jan 2021 - May 2022
Docker container to share MBs between mobile phone numbers at the first of the month
Contributions:10 commits, 4 PRs, 6 pushes in 1 year 4 months
docker-containermobile
OlafHaalstra/OlafHaalstra
Jul 2020 - Apr 2026
Contributions:9 pushes, 1 branch in 5 years 9 months
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