Vlad Grigorescu
Staff Security Engineer at Vlad Grigorescu
Champaign, Illinois, United States
Summary
🤩
Rockstar🎓
Top SchoolVlad Grigorescu is a Staff Security Engineer with 14 years of experience building and scaling network monitoring and security tooling for research, supercomputing, and global production environments. He specializes in log indexing and high-throughput network monitoring—architecting solutions for multi-100 Gbps links and global infrastructures with hundreds of datacenters and egress points. A longtime contributor to the Zeek (formerly Bro) Network Security Monitor, he has implemented protocol-level features such as DNS TXT parsing and authored protocol analyzers used in incident response. Vlad blends hands-on offensive skills—CTF wins and pen testing—with systems-level engineering, from tuning large database clusters to deploying monitoring at 100 Gbps. Based in Champaign, Illinois, he advises organizations as a consultant while driving security engineering at Google, bringing a rare combination of operational experience and open-source impact.
14 years of coding experience
11 years of employment as a software developer
Bachelor's, Computer Engineering, Bachelor's, Computer Engineering at University of Illinois Urbana-Champaign
English, Romanian
Github Skills (7)
zeek10
c-language10
dns10
cprogramming-language10
network-security9
network-monitoring8
security8
Programming languages (13)
Github contributions (5)
zeek/zeek
Oct 2012 - Sep 2021
Zeek is a powerful network analysis framework that is much different from the typical IDS you may know.
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:12 reviews, 331 commits, 25 PRs in 8 years 11 months
Contributions summary:Vlad implemented DNS TXT record support, enhancing the Zeek network analysis framework by enabling the parsing and analysis of TXT records. Their code changes include modifications to the DNS manager, related classes and structures within the `src` directory, and adjustments to the saving and caching mechanisms, demonstrating a focus on DNS-related functionality. Further, the user also contributed to other security aspects of the project.
dfirnsmsecurityanalysisnetworking
esnet/cookiecutter-zeekpackage
Jul 2020 - Oct 2020
Cookiecutter template for Zeek packages
Contributions:119 commits, 99 pushes, 1 branch in 2 months
pythoncookiecutter-templatecookiecutterzeek
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