ABOUT H3SYSTEMS
Security experience, brought closer to the business.
H3Systems is a cybersecurity-first managed service provider helping SMBs turn IT risk into resilience since 2014.

OUR CEO · DON HARTUNG
High-stakes security experience, applied with practical care.
Don Hartung brings more than 25 years of experience across law enforcement, counterintelligence, information security, and enterprise technology, including roles associated with McAfee, Qualys, and FireEye/Mandiant.
H3Systems works from a simple operating posture: secure by default, measure what matters, prepare for failure, and communicate early.
Critical P1
Acknowledgement within 30 minutes during business hours, with immediate triage for managed clients with 24/7 monitoring.
High P2
Same-business-day action with status updates.
Standard P3
Scheduled within 1–2 business days.
START WITH A CLEARER PICTURE
Bring us the problem.
We’ll bring a plan.
Tell us what is worrying you, what is changing, or what needs to work better. We’ll start with the practical next step.
888-488-7970