Israeli AI security startup Zenity raises $125 million Series C to secure autonomous AI agents

Israeli cybersecurity startup Zenity has raised $125 million in a Series C funding round led by Norwest Venture Partners, bringing its total funding to $185 million. New investors SoftBank Vision Fund 2, Hitachi Ventures, and LG Technology Ventures joined the round. Zenity, which has tripled its revenue annually, plans to use the capital to expand globally, particularly in Europe and Asia-Pacific. The funding comes amid projections that the number of autonomous AI agents will exceed 1 billion, shifting security demands from model-level protection to real-time action monitoring.

Zenity Series C funding round

• ▪Zenity raised $125 million in a Series C funding round led by Norwest Venture Partners
• ▪The Series C funding round brings Zenity's total funding to approximately $185 million
• ▪The Series C funding is mostly primary capital, but includes a secondary component of about $10 million

AI agent security vulnerabilities

• ▪Zenity's research team, Zenity Labs, discovered the AgentFlayer vulnerability class involving zero-click attacks that hijack enterprise AI agents
• ▪Zenity Labs demonstrated how a malicious calendar invitation could hijack Perplexity's Comet browser and access an unlocked 1Password vault
• ▪Zenity Labs uncovered a critical vulnerability in Microsoft Copilot Studio and demonstrated data exfiltration via poisoned documents in ChatGPT

AI agent adoption projections

• ▪Zenity has tripled its revenue in each of the past two years and is on track to triple it again in 2026
• ▪Industry projections estimate the number of autonomous AI agents will reach or exceed 1 billion in the coming years

Zenity platform expansion strategy

• ▪Zenity plans to use the funding to grow Zenity Labs, accelerate platform innovation, and develop compliance and incident response modules
• ▪Zenity plans to use the Series C funds to expand its global footprint, particularly across Europe and the Asia-Pacific region

Investor confidence in AI security

• ▪Gartner recognized Zenity as the company to beat in AI agent governance in an April 17, 2026 report
• ▪Norwest Venture Partners partner Assaf Harel stated that organizations need a new security approach built for rapidly evolving autonomous AI agents

SoftBank Hitachi LG investment

• ▪SoftBank Corp. Senior Vice President, CISO, and CRO Tadashi Iida stated that Zenity enables the company to confidently deploy AI agents
• ▪SoftBank Vision Fund 2, Hitachi Ventures, and LG Technology Ventures participated as new investors in Zenity's Series C round