Case Study: Telhio Credit Union achieves secure growth and protects customer data with Illumio

Telhio Secures Its Growth With Illumio

Telhio Credit Union, a Columbus-based financial institution that grew from about $700M to $1.3B in assets through mergers, faced escalating IT complexity and security exposure. With a 15-person IT team responsible for more than 120 data-center servers and 500 workstations, the credit union needed a scalable way to stop ransomware and lateral attacks that traditional firewalls couldn’t easily contain.

Telhio piloted Illumio Core (servers) and Illumio Endpoint (workstations), then rolled the solution out broadly to implement Zero Trust microsegmentation. Illumio’s side‑car agents, real‑time traffic visibility, policy testing, and simple application labeling let Telhio enforce segmentation at scale without disrupting the network—helping the credit union grow while keeping customer data and systems protected.

Telhio Credit Union

David Ault

VP of Information Security