# Tamas Kadar

> Tamas Kadar is the Hungarian co-founder and CEO of SEON, an Austin-based fraud-prevention and AML software company born from a failed university cryptocurrency venture. After fraudsters consumed half the young exchange's revenue in its first week, Kadar and co-founder Bence Jendruszak built their own defense, launched SEON in 2017, and grew it into a global platform backed by $187 million in funding.

- **Role:** Co-Founder and CEO at SEON
- **Organizations:** SEON, Forbes Technology Council, Corvinus University of Budapest
- **Nationality:** Hungarian
- **Education:** BSc, ICT Business Analyst, Corvinus University of Budapest
- **Known for:** Co-founded SEON in 2017 and grew it from a university project into a fraud-prevention and AML platform operating from Austin, Budapest, London and Singapore., Raised $187 million in total funding for SEON through its 2025 Series C., Named to the Forbes 30 Under 30 Europe class of 2023 with co-founder Bence Jendruszak.

## Career timeline

- **2013** — Met future co-founder Bence Jendruszak while studying at Corvinus University of Budapest.
- **2017** — Co-founded SEON after the pair's cryptocurrency venture was hit by fraud and their in-house defense attracted interest from other businesses.
- **2021** — SEON raised a €10 million Series A led by Creandum.
- **2022** — SEON raised a $94 million Series B led by IVP.
- **2023** — Kadar and Jendruszak were named to Forbes 30 Under 30 Europe.
- **2025** — SEON closed an $80 million Series C led by Sixth Street Growth, bringing total funding to $187 million.
- **2026** — Kadar described SEON's next phase as an AI command center connecting fraud prevention, identity verification and AML compliance.

## Achievements

- Co-founded SEON in 2017 and grew it from a university project into a fraud-prevention and AML platform operating from Austin, Budapest, London and Singapore.
- Raised $187 million in total funding for SEON through its 2025 Series C.
- Named to the Forbes 30 Under 30 Europe class of 2023 with co-founder Bence Jendruszak.
- Built SEON's original fraud-detection tool after developing an in-house defense for a cryptocurrency exchange.
- SEON was recognized in Deloitte's Fast 50.

## Latest updates

- **2026-09** — Kadar wrote that faster AI-assisted software development raises the importance of testing, judgment and controlled release processes in fraud prevention.
- **2026-09** — He described reviewing every SEON customer-support ticket for six years and credited customer feedback with shaping the product roadmap.
- **2026-06** — On the Leaders in Payments podcast, Kadar discussed synthetic identities, account takeover, agentic commerce and the use of language models to speed fraud investigations.
- **2025-09** — SEON raised an $80 million Series C led by Sixth Street Growth, bringing total funding to $187 million.

## Links

- Website: https://seon.io
- LinkedIn: https://www.linkedin.com/in/tomkadar
- Twitter/X: https://twitter.com/seon_security
- Facebook: https://www.facebook.com/seontechnologies

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Profile page: https://yespress.io/tamas-kadar
Published by YesPress — https://yespress.io
Last updated: 2026-09-26