Vlad Grigorescu has been working in information security since 2005, with a focus on open-source tool development, especially with Bro/Zeek. Most of this work has been in the academic and high-performance computing and networking space, as a security engineer at the University of Illinois, Carnegie Mellon University, the National Center for Supercomputing Applications (NCSA), and most recently at the Energy Sciences Network (ESnet). His work has focused on network intrusion detection, and also included security architecture, vulnerability research, and software development. Vlad has contributed to projects like Zeek, rsyslog, and Logstash, and has served on several technical committees, such as SALSA-CSI2 and the REN-ISAC Technical Advisory Group. Vlad is also interested in penetration testing, and has enjoyed participating in capture the flag competitions.