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# Wiz Founder Who Rejected $23B Google Offer Backs Guardio at $1.1B
- URL: https://wire.fourthweb.ai/wiz-founder-who-rejected-23b-google-offer-backs-guardio-at-1-1b/
- Published: 2026-09-03T09:56:07.000Z
- Updated: 2026-09-03T10:30:38.000Z
- Description: The Wiz founder who turned down Google's $23 billion offer is now writing checks to the next generation of security unicorns. Guardio, an Israeli cybersecurity startup, raised funding at a $1.1 billion valuation, with backing from Assaf Rappaport, founder of cloud security giant Wiz
- Author: Travis Wright
- Tags: AI Agent Economy, Agentic Workflows, AI Agents, Funding Rounds

**The Wiz founder who turned down Google's $23 billion offer is now writing checks to the next generation of security unicorns.**

### The Summary

- [Guardio, an Israeli cybersecurity startup, raised funding at a $1.1 billion valuation](https://www.bloomberg.com/news/articles/2026-09-03/wiz-founder-backs-israeli-startup-guardio-at-1-1-billion-value?ref=wire.fourthweb.ai), with backing from Assaf Rappaport, founder of cloud security giant Wiz
- Rappaport's involvement signals where smart infrastructure money sees the next cybersecurity frontier
- Israeli security tech continues dominating the agent security layer as enterprises deploy more autonomous systems

### The Signal

[Guardio just joined the unicorn club with a $1.1 billion valuation](https://www.bloomberg.com/news/articles/2026-09-03/wiz-founder-backs-israeli-startup-guardio-at-1-1-billion-value?ref=wire.fourthweb.ai), backed by Assaf Rappaport, the founder who famously walked away from Google's $23 billion acquisition offer for Wiz last year. When someone turns down that kind of money to keep building, their next bets are worth watching. Rappaport isn't spreading capital randomly. He's mapping the next phase of enterprise security architecture.

The timing matters. Guardio's rise comes as companies move from protecting static infrastructure to securing dynamic agent systems. Traditional cybersecurity locks the door. Agent-era security has to authenticate decisions made by autonomous systems operating at machine speed across multiple environments.

> "The founder who rejected $23 billion is now funding the next layer of security infrastructure."

Israeli cybersecurity startups have produced an outsized share of the security stack: Check Point, Palo Alto Networks, CrowdStrike's Israeli engineering center, Wiz itself. The pattern repeats because Israel trains engineers to think like attackers first, defenders second. That mindset becomes critical when you're securing [AI agents](https://wire.fourthweb.ai/tag/ai-agents/) that can spin up resources, move data, and execute transactions without human oversight.

What separates Guardio in this cohort is unclear from the limited public information, but the valuation and investor profile suggest they're solving authentication and authorization challenges for multi-agent environments. As enterprises deploy agents that act on their behalf across cloud infrastructure, SaaS platforms, and internal systems, the attack surface isn't just bigger. It's fundamentally different.

### The Implication

Watch where Rappaport's capital flows next. Wiz validated that cloud security could command premium valuations and strategic interest at the highest levels. His backing of Guardio suggests the security layer for autonomous agents is the next frontier worth building billion-dollar companies around. For enterprises deploying AI agents in production, the question isn't whether to invest in agent-specific security tooling. It's whether to build internally or buy from the emerging Israeli cohort that's already thinking three moves ahead.

### Sources

[Bloomberg Tech](https://www.bloomberg.com/news/articles/2026-09-03/wiz-founder-backs-israeli-startup-guardio-at-1-1-billion-value?ref=wire.fourthweb.ai)