# Yonatan Striem-Amit

> Yonatan Striem-Amit is the co-founder and CTO of 7AI, an agentic cybersecurity company that raised the largest Series A in cybersecurity history ($130M). A veteran of Israel's elite Unit 8200 intelligence corps, he co-built Cybereason from a Boston startup into a global EDR leader, then left to solve the defender speed problem with autonomous AI agents. He reverse-engineered video games at age 12, coded his way into military intelligence at 18, and has spent 25 years trying to flip the asymmetry between attackers and defenders.

- **Role:** Co-Founder & CTO at 7AI
- **Organizations:** 7AI, Cybereason, WatchDox, Gita Technologies, Mobileye, IDF Unit 8200
- **From:** Israel
- **Nationality:** Israeli
- **Education:** MSc in Computer Science (Machine Learning), The Hebrew University of Jerusalem, BSc in Computer Science + Mathematics, The Hebrew University of Jerusalem
- **Known for:** Co-founded Cybereason, helping pioneer the Endpoint Detection and Response (EDR) market, Led Cybereason to best-ever results in MITRE ATT&CK Enterprise Evaluation 2022, Co-founded 7AI, which raised $130M Series A - reported as the largest in cybersecurity history

## Career timeline

- **1998-2002** — IDF Unit 8200 - Programmer and Team Leader in elite signals intelligence unit, recruited at age 18 based purely on self-taught skills
- **2003-2004** — Mobileye - Programmer and Algorithms Developer for automotive computer vision
- **2005-2007** — MSc at Hebrew University, specializing in Machine Learning
- **2006-2009** — Gita Technologies - System Internals Development Team Leader at Israeli intelligence/cyber R&D firm
- **2009-2011** — WatchDox - CTO, led R&D for DRM and SaaS security startup
- **2012-2023** — Cybereason - Co-Founded with Lior Div and Yossi Naar; served as CTO for 11 years, building the company into a global EDR leader
- **2024** — Co-Founded 7AI (Seven AI) with Lior Div - raised $36M seed round from Greylock, Spark Capital, and CRV
- **2025-02** — 7AI emerged from stealth publicly with $36M seed announced
- **2025-12** — 7AI raised $130M Series A - largest cybersecurity Series A in history - led by Index Ventures with Blackstone Innovations Investments

## Achievements

- Co-founded Cybereason, helping pioneer the Endpoint Detection and Response (EDR) market
- Led Cybereason to best-ever results in MITRE ATT&CK Enterprise Evaluation 2022
- Co-founded 7AI, which raised $130M Series A - reported as the largest in cybersecurity history
- 7AI named #6 in Security on Fast Company's Most Innovative Companies 2026 list
- Total funding raised across ventures exceeds $166M at 7AI alone
- Academic work cited by 784+ publications in Computer Science and Machine Learning
- Recruited at age 18 into IDF Unit 8200 based on entirely self-taught programming skills
- RSA Conference 2024 Program Committee member for Hackers and Threats track
- 25+ years of cybersecurity and startup leadership experience
- Built Cybereason from 3 co-founders to a multi-hundred-person global organization

## Latest updates

- **2025-12** — 7AI raised $130M Series A - largest cybersecurity Series A in history - led by Index Ventures with Blackstone Innovations Investments participation
- **2026-02** — 7AI named #6 in Security on Fast Company's Most Innovative Companies 2026 list
- **2025-02** — 7AI emerged publicly from stealth with $36M seed funding announcement
- **2024-02** — Co-founded 7AI with Lior Div after departing Cybereason, focusing on agentic AI for automated incident response

## Links

- Website: https://blog.7ai.com/author/yonatan-striem-amit
- LinkedIn: https://www.linkedin.com/in/yonatanstriemamit/
- Twitter/X: https://x.com/YonatanStrAmit
- YouTube: https://www.youtube.com/watch?v=TLwByiKd77E

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Profile page: https://yespress.io/yonatan-striem-amit
Published by YesPress — https://yespress.io
Last updated: 2026-04-30