John De Kroon
Technical Director at CyberAnt B.V.
Geldermalsen, Gelderland, Netherlands
Summary
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Senior🎓
Top SchoolJohn De Kroon is a technical director and security researcher with 13 years of hands-on experience delivering security automation and tooling for banks, telecoms and public sector organizations. He founded and leads product development at CyberAnt, helping companies gain actionable insight into their cyber posture while maintaining a practitioner’s eye from earlier ethical hacking roles at Rabobank and DUO. John combines offensive security expertise—pentesting, code analysis and incident support—with product-minded engineering, having built commercial and freelance web solutions earlier in his career. Based in the Netherlands, he bridges developer teams and security operations to turn complex vulnerabilities into practical, auditable fixes. An understated strength is his track record of moving between deep technical testing and product leadership, which enables pragmatic, scalable security solutions.
13 years of coding experience
4 years of employment as a software developer
Primary School, Primary School at De HorizonHavo, Profiel NG, Havo, Profiel NG at Greijdanus collegeMinor Programmeren, Information Technology, Minor Programmeren, Information Technology at Universiteit van AmsterdamBachelor's Degree, Information Technology, Bachelor's Degree, Information Technology at Hogeschool Windesheim FlevolandFirebrand
Github Skills (100)
mass10
simulate10
scanner9
sniffer9
home-automation9
reader-writer9
socket9
mifare9
reader9
python9
nfc9
home-assistant9
hsts9
php9
raspberry-pi9
Programming languages (8)
Github contributions (5)
johndekroon/serializekiller
Nov 2015 - Feb 2019
Contributions:3 releases, 40 commits, 6 PRs in 3 years 4 months
javascannerserializemass
johndekroon/RPTR
Nov 2016 - Dec 2016
Contributions:4 commits, 3 pushes, 1 branch in 21 days
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