Julian Horoszkiewicz
Vulnerability Researcher At Threat Research Center
Kuyavian-Pomeranian Voivodeship, Poland
Summary
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Senior🎓
Top SchoolJulian Horoszkiewicz is a seasoned cybersecurity engineer and vulnerability researcher with 11 years of experience, currently focusing on Windows kernel-mode research at Atos Threat Research Center. A former professional penetration tester, red team lead and part-time lecturer, he blends hands-on offensive testing with formal incident response, DFIR and malware analysis expertise. Regular CVE contributor and author of tools and articles, he routinely automates research workflows and has built internal services for attack surface mapping. Julian’s technical curiosity spans reverse engineering, OS internals and low-level programming—a passion hinted at by his tongue-in-cheek GitHub bio about programming’s hazards. He holds advanced offensive security certifications (OSCP, OSCE, OSWE, CRTO) and a Master of Engineering in IT, bringing both academic grounding and practical impact to complex vulnerability discovery.
11 years of coding experience
9 years of employment as a software developer
Master of Engineering, IT, Master of Engineering, IT at Politechnika Opolska
English, German, Ukrainian, Polish, Russian, Portuguese
Github Skills (47)
command-injection10
path-traversal10
discovery-service9
vhosts9
virtual-hosts8
scanner8
reverse-lookup8
burp8
web-application-security7
penetration-testing7
security7
firmware7
hacking7
offensive-security6
scanning6
Programming languages (8)
Github contributions (5)
ewilded/mobile
Dec 2020 - Apr 2022
Contributions:4 commits, 10 pushes, 1 branch in 1 year 4 months
ewilded/localdataHog
May 2020 - Oct 2021
String-based secret-searching tool (high entropy and regexes) based on truffleHog
Contributions:14 commits, 11 pushes, 1 branch in 1 year 5 months
trufflehog
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