Fotios Chantzis
Security Engineering at Nmap (http://nmap.org/ncrack)
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolFotios Chantzis is a security engineer based in San Francisco with nine years of hands-on experience blending software development, vulnerability research, and operational security. He currently works in security engineering at OpenAI and has been the main developer and long-term maintainer of Ncrack for the Nmap project, demonstrating deep protocol reverse-engineering and high-performance network tooling expertise. His background includes leading medical device security programs at Mayo Clinic, authoring Practical IoT Hacking, and producing a Mastering Nmap course—evidence of his skill translating complex technical research into practical training and tools. A pragmatic builder and former founder, he’s shipped cloud and mobile systems, designed robust sync and recovery algorithms, and still writes low-level C/C++ network code for large-scale async scanning and authentication testing. Less obvious: his work includes the first broadly working RDP cracker and adapting OpenSSH into a non-blocking library for Ncrack, showing rare depth in both exploit development and scalable systems design.
9 years of coding experience
14 years of employment as a software developer
High School, 19.6/20, High School, 19.6/20 at 1st Ilioupoli high school, Athens, GreeceMaster of Engineering (MEng), Computer Engineering, 8.46/10, Master of Engineering (MEng), Computer Engineering, 8.46/10 at Computer Engineering and Informatics Department, University of Patras, Greece
English, German, Japanese, Greek
Github Skills (33)
bag-of-words7
mining7
text-mining6
orange6
openstreetmap-data6
stopwords6
overpass-api6
phonetics5
api5
sentiment-analysis5
text-analysis5
lemmatization5
nltk5
twitter5
openstreetmap5
Programming languages (6)
Github contributions (5)
fotisz/MachineLearningIntro
Dec 2016 - Jun 2017
Contributions:171 pushes, 1 branch in 6 months
fotisz/DelayPropagation
Jan 2017 - Dec 2020
Contributions:247 pushes, 1 branch in 3 years 11 months
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