# Nir Polak

> Nir Polak is the co-founder and founding CEO of Exabeam, the cybersecurity company he led until 2021, when he became chairman as it announced a $200 million round at a $2.4 billion valuation. Now building cybersecurity companies with Caleb Sima at WhiteRabbit, he also serves as a SignalFire Board Partner. His public interviews emphasize customer research, trust, complementary co-founders and a willingness to change roles as a business grows.

- **Role:** Co-founder and Builder at WhiteRabbit; Board Partner at SignalFire
- **Organizations:** WhiteRabbit, Exabeam, SignalFire, Imperva, Adjungo Networks, Shopping.com
- **Nationality:** Israeli
- **Education:** Bachelor of Arts in computer sciences, The Interdisciplinary Center, Israel (now Reichman University)
- **Known for:** Co-founded Exabeam and led it as founding CEO until June 2021., Led Exabeam through its rise in user and entity behavior analytics and its expansion into SIEM., Exabeam announced a $2.4 billion valuation in its June 2021 Series F round.

## Career timeline

- **Before 2013** — Held engineering roles at Adjungo Networks and Shopping.com; later set product strategy and built the worldwide services organization at Imperva.
- **2013** — Co-founded Exabeam with Sylvain Gil and Domingo Mihovilovic and became its first CEO.
- **2018** — Exabeam ranked No. 12 on the Inc. 5000.
- **2021** — Moved from CEO to chairman as Michael DeCesare became CEO; Exabeam announced $200 million in Series F funding at a $2.4 billion valuation.
- **2022** — Joined SignalFire as a Board Partner.
- **2024** — Publicly announced WhiteRabbit with Caleb Sima, describing a cybersecurity venture studio that builds companies with founders.

## Achievements

- Co-founded Exabeam and led it as founding CEO until June 2021.
- Led Exabeam through its rise in user and entity behavior analytics and its expansion into SIEM.
- Exabeam announced a $2.4 billion valuation in its June 2021 Series F round.
- Named as a co-inventor on the patent publication US20200082098A1 concerning detection and assessment of network security risks.

## Latest updates

- **2024-07** — Announced WhiteRabbit with Caleb Sima as a cybersecurity venture studio.
- **2024-08** — Discussed co-founder selection, values and founder agreements in Lauren Ipsen’s Never Too Early interview.

## Links

- Website: https://wr.vc/
- LinkedIn: https://www.linkedin.com/in/nir-polak-1564934
- Twitter/X: https://twitter.com/nirpolak

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Profile page: https://yespress.io/nir-polak
Published by YesPress — https://yespress.io
Last updated: 2026-10-21