Eyal Gruner

Angel Investor Active Israel
LinkedIn
Last updated 2026-06-18
Portfolio
4
in our dataset
Rounds participated
5
Rounds led
0
Rounds' value
$28.0M
total disclosed, rounds participated
Stages
Seed, Pre-Seed, A Round

About

Eyal Gruner is a serial business entrepreneur and angel investor, investing in early-stage deals. He is currently the Co-founder, main investor & CEO of Cynet, a security platform that protects organizations from breaches by automated discovery and mitigates threat vectors across all attack stages. Prior to his position at Cynet, he has also co-founded and served as the CEO of BUGSEC, a cyber consultancy firm (in which he still serves as a Board Member), and was the co-founder and CEO of Versafe, which has developed identity theft and online fraud prevention applications, and was acquired by F5 Networks in 2013. Mr. Gruner began his career at age 15, when he hacked into his banks ATM, then approached bank management to demonstrate the weaknesses of their system. He parlayed this into a job, working with the Information Security team of Bank Leumi for a year, then spending another year at age 16 working at the former digital rights management and internet security firm Aladdin Knowledge Systems, before founding BugSec in 2005. Mr. Gruner has been recognized in Googles Hall of Fame with a Google Security Reward for identifying and reporting vulnerabilities. In addition, Mr. Gruner also serves as an Insider at YL Ventures and as a Member of CyberStarts VC.

Portfolio · 4

Cyclops Security
Continuous AI Cyber Security Risk Management Platform
1 round $6.4M committed Latest: 2023-07
Build.security
Authorization Policy Management Platform
1 round $6.0M committed Latest: 2020-11
Cycode
Software Supply Chain Security
1 round $4.6M committed Latest: 2019-09
Cymulate
Exposure Management and Security Validation
2 rounds $11.0M committed Latest: 2019-03

Investment activity

1 portfolio exit on record.

Portfolio by sector

Cyber Security4

Q&A

What is Eyal Gruner's primary investment focus?
Eyal Gruner primarily invests in the Cyber Security sector, with all four of his listed portfolio companies operating in this space.
What stages of investment does Eyal Gruner typically target?
Eyal Gruner focuses on early-stage deals, including Seed, Pre-Seed, and A Round investments. According to startupim data, he has participated in 4 Seed rounds and 1 A Round.
Can you name some of Eyal Gruner's notable portfolio companies?
Eyal Gruner's portfolio includes Cycode, a software supply chain security company, and Cymulate, which focuses on exposure management and security validation.
Has Eyal Gruner had any exits from his portfolio companies?
Yes, Eyal Gruner had an exit in September 2021 when Build.security, an authorization policy management platform, was acquired by Elastic for $39.3M.
What is Eyal Gruner's background in the cybersecurity industry?
Eyal Gruner is a serial entrepreneur in cybersecurity. He is the Co-founder, main investor, and CEO of Cynet, and previously co-founded BUGSEC and Versafe, which was acquired by F5 Networks in 2013.
When was Eyal Gruner's most recent investment activity?
Eyal Gruner's most recent recorded investment activity was in July 2023.
What is Eyal Gruner's role at YL Ventures and CyberStarts VC?
Eyal Gruner serves as an Insider at YL Ventures and as a Member of CyberStarts VC.
What is the typical investment range for Eyal Gruner?
Eyal Gruner's investment range is between $3.5M and $7.5M.
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