Justin Henderson
Owner And CEO Of Tellaro
Illinois, United States
Summary
🤩
Rockstar🎓
Top SchoolJustin Henderson is a seasoned security architect, researcher, and entrepreneur with over a decade of experience designing defensive and monitoring systems for healthcare and government environments. As Owner and CEO of Tellaro and founder of H & A Security Solutions, he leads consulting and managed services focused on intrusion detection, logging, penetration testing, and resilience engineering. A long-time SANS Senior Instructor and course author of SEC555, he blends hands-on incident analysis with curriculum-level thought leadership and was the 13th GSE to serve as both a red and blue SANS Cyber Guardian. Justin’s background in enterprise systems architecture at Heartland Dental and earlier roles in banking and hospital IT underpin his pragmatic approach to scalable security. With more than 50 industry certifications and a track record of building custom network monitoring solutions, he’s equally comfortable in code, tooling, and high-level risk strategy.
11 years of coding experience
11 years of employment as a software developer
BAS, Network Design and Management, BAS, Network Design and Management at Western Governors UniversityAAS, Network Administration, AAS, Network Administration at Lake Land Community College
English
Github Skills (83)
python10
network-analysis10
elasticsearch10
qualys10
cybersecurity10
elk10
logstash10
vulnerability10
network-traffic10
nessus10
elasticstack10
logger9
logging9
analytics9
java9
Programming languages (14)
Github contributions (5)
HASecuritySolutions-Docker/domain_stats2
Dec 2019 - Feb 2026
Contributions:20 releases, 1 review, 28 PRs in 6 years 2 months
HASecuritySolutions-Docker/sans_wiki_update
Dec 2018 - Sep 2020
Contributions:6 releases, 1 push, 11 tags in 1 year 9 months
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