About Us

Astelia was founded by cyber veterans and former leaders of the Israeli national red team who bring deep expertise across offensive and defensive cybersecurity. Through years of hands-on work with organizations of all sizes, they developed a precise understanding of how attackers think and where security teams lack visibility.

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Exposure Management-About us

Leadership

Leadership-Nadav Ostrovsky
Nadav Ostrovsky
Co-Founder & CTO
Leadership-Alon Noy
Alon Noy (Neuhaus)
Co-Founder & CEO
Leadership-Roy Rajwan
Roy Rajwan
Co-Founder & CPO

“As AI reshapes attacker capabilities, enterprises must move from assumed risk to provable exposure. Astelia shows where organizations are truly exposed, enabling CISOs to align security with business priorities and turn vulnerability management from reactive to preemptive.”

Juriaan Duizendstraal

Juriaan Duizendstraal
Partner

Index ventures

“What convinced us about Astelia was the team’s real-world perspective on how security failures actually emerge, a worldview embedded in the product that cuts through vulnerability noise and redefines how enterprises operationalize security.”

Amir-Zilberstein

Amir Zilberstein
Managing Partner

Team8

“What stood out to us about Astelia was the founders’ National Red Team background and the perspective that comes from testing real-world defenses at the highest level. That experience gives Astelia a grounded understanding of how attacks actually unfold inside complex environments, and it is clearly reflected in the product they are building to identify and mitigate real exposure.”

John Brennan

John Brennan
Founder & Managing Partner

Holly ventures
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