Johnny Vestergaard
Chief Advisor at National enhed for Særlig Kriminalitet (NSK)
Aalborg, North Denmark Region, Denmark
Summary
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RockstarJohnny Vestergaard is a Chief Advisor and digital forensics specialist with 14 years of experience blending investigative rigor, engineering pragmatism, and intelligence analysis across military, NATO, and national cybercrime units. He leads forensic and special engineering support for a police district of 590,000 citizens, translating complex technical findings into clear, actionable insights for non-technical stakeholders. A hands-on developer and back-end contributor to notable open-source honeypots like Glastopf and Conpot, he has improved robustness and maintainability by refactoring logging and database layers and adding protocol-aware features. Johnny’s toolkit spans network intrusion detection, threat intelligence, honeypot deployment, and forensic tool training, enabling him to both detect adversaries and harden investigative workflows. Known for finding simple, novel solutions to complex problems, he combines field-tested investigative instincts from military intelligence with modern cyber-forensics engineering.
14 years of coding experience
1 year of employment as a software developer
English, Danish
Github Skills (18)
git10
sqlite10
python10
security10
honeypot10
sqlalchemy10
network-protocol10
version-control10
logging10
protocols10
modbus10
sqllite9
sqlite-database9
database-design9
apidoc8
Programming languages (5)
Github contributions (5)
mushorg/conpot
Mar 2013 - Dec 2016
ICS/SCADA honeypot
Role in this project:
Back-end Developer
Back-end DeveloperContributions:420 commits, 8 PRs, 27 pushes in 3 years 9 months
Contributions summary:Johnny primarily contributed to the development of a Modbus/SCADA honeypot, implementing features like session ID tracking, and integrating functionality for the HPFriends and SQLite logging. Their work involved modifying the core server logic, and adding new functionality to interface with other systems. They demonstrated proficiency in Python, and likely worked with networking protocols.
pythonsecurity-toolssecurityicsscada
mushorg/glastopf
Nov 2012 - Jan 2015
Web Application Honeypot
Role in this project:Back-end Developer
Back-end DeveloperContributions:287 commits, 1 push, 2 comments in 2 years 2 months
Contributions summary:Johnny primarily contributed to back-end development by addressing issues and implementing fixes related to the core functionality of the Glastopf honeypot. They corrected SQLite-related error messages, removed unnecessary code instructions, and created the necessary database and log directories during the application startup process. Furthermore, the user refactored the logging mechanism by replacing older file logging and enabling Python-based logging, as well as replacing MySQL, PostgreSQL and SQLite modules with a generic SQLAlchemy module. These changes significantly impacted the robustness and maintainability of the codebase.
honeypotweb-application
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