# Ely Abramovitch

> Ely Abramovitch is co-founder and CEO of Legion Security, which develops AI agents that learn from security analysts’ existing workflows. A former professional jazz pianist who studied mathematics at Tel Aviv University, he previously led product management for Microsoft Sentinel and was an early employee at Indegy. He founded Legion with Michael Gladishev and Eyal Fisher in 2024; the company announced $38 million in combined seed and Series A funding in July 2025.

- **Role:** Co-founder and CEO at Legion Security
- **Organizations:** Legion Security, Microsoft, Indegy
- **Education:** Jazz and Contemporary Music studies; completion of a BFA not verified, The New School, BS in Mathematics with minors in Economics and Philosophy (listed by Crunchbase), Tel Aviv University
- **Known for:** Led product work for Microsoft Sentinel; Accel credits his role in its growth into a billion-dollar business., Co-founded Legion Security, which disclosed $38 million in combined seed and Series A financing in July 2025., Named co-inventor on US11991201B2, Likelihood assessment for security incident alerts, granted May 21, 2024.

## Career timeline

- **2012-2013** — Studied jazz and contemporary music at The New School; worked as a jazz musician in New York.
- **2013-2017** — Studied mathematics at Tel Aviv University.
- **Before 2024** — Early employee at Indegy and subsequently a product-management leader for Microsoft Sentinel; exact employment dates not verified.
- **2021** — Authored an Azure Sentinel post introducing a dedicated onboarding/offboarding API.
- **2022** — Authored a Microsoft Sentinel post about relating alerts to incidents.
- **2023** — Met Accel investors in Tel Aviv in June, according to their investment account.
- **2024** — Co-founded Legion Security with Michael Gladishev and Eyal Fisher.
- **2025** — Legion announced $38 million in combined seed and Series A funding on July 30.
- **2026** — Introduced Legion Investigator in a March 12 article and discussed it at RSAC.

## Achievements

- Led product work for Microsoft Sentinel; Accel credits his role in its growth into a billion-dollar business.
- Co-founded Legion Security, which disclosed $38 million in combined seed and Series A financing in July 2025.
- Named co-inventor on US11991201B2, Likelihood assessment for security incident alerts, granted May 21, 2024.
- Legion was one of four finalists announced for the inaugural SecTor Startup Spotlight competition in September 2025.

## Latest updates

- **2026-10** — Contributed commentary to VMblog’s October 1 Cybersecurity Awareness Month roundup, discussing agentic defense and citing Virgin Money’s backlog reduction.
- **2026-09** — Appeared on On Security, season 6 episode 2, listed as published September 4, discussing the future of security operations.
- **2026-04** — Published The Future is Not Better Detections on April 14, arguing for AI defense that works within existing enterprise operations.
- **2026-03** — Published the March 12 introduction to Legion Investigator and appeared in an RSAC interview released March 26.

## Links

- Website: https://www.legionsecurity.ai/
- LinkedIn: https://www.linkedin.com/in/ely-abramovitch-a3a912bb

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Profile page: https://yespress.io/ely-abramovitch
Published by YesPress — https://yespress.io
Last updated: 2026-10-23