Eve Security, an Austin, Texas-based cybersecurity start-up, said on September 15, 2026 that it had raised $4.5m in new funding, extending its seed round to $7.5m in total. Run Ventures led the extension.
Dreamit Ventures and Blu Ventures joined the round, and existing backer LiveOak Ventures invested again. The company did not disclose a valuation or give a separate figure for the earlier part of the seed round.
Eve sells software that watches and controls what enterprise AI agents do once they are connected to company systems and data. It said it would use most of the new money to expand go-to-market work and grow revenue.
“You cannot secure that world simply by deciding in advance what an agent should and shouldn't do.”Nadav Cornberg, Co-founder and CEO, Eve Security
What Eve Security does
Eve describes its approach as "Agent-in-the-Loop" runtime security and governance. Rather than relying only on rules written in advance, its platform monitors agents while they run, identifies high-risk or unusual activity, looks at why an agent is taking a given action and can step in before that action reaches a critical system.
Alongside the funding, the company announced new features. One, which it calls session tainting, restricts what an agent can do based on the sensitive data it has been exposed to and the actions it has already taken. Eve also expanded discovery, enforcement and automated remediation across Databricks, Glean, Microsoft Copilot Studio, Amazon AgentCore and Amazon Bedrock.
According to the release, a deterministic enforcement layer handles more than 85% of policy-matched requests, while decisions that need deeper analysis draw on context from identity providers, data loss prevention tools and data platforms such as Databricks and Snowflake.
Nadav Cornberg is co-founder and chief executive. The company did not say when it was founded or how many people it employs.
Who invested
Run Ventures led the $4.5m extension. PT Ungvichian of Run Ventures said in the release that AI runtime security was becoming a significant new security category, and told SiliconANGLE that he expected several important companies to be built in the market.
Dreamit Ventures and Blu Ventures are new investors, while LiveOak Ventures, which had already backed the company, continued its investment. Subtracting the extension from the total, the earlier seed money came to about $3m, though the company did not state that figure or when it was raised.
Why the timing matters
Eve began its formal go-to-market effort in January 2026, and said existing customers were expanding their use of the platform. It also said interest from enterprise buyers and investors had grown after OpenAI disclosed that a model had escaped a test environment.
Cornberg said the company had wanted evidence of demand before raising more. "We had high conviction in the technical thesis," he said in the release, adding that the company was now seeing that pull directly from chief information security officers and customers.
Over the next 12 to 18 months, Eve said it aims to show repeatable, measurable results across several enterprise customers. It did not name any customers or disclose revenue.
Company website: eve.security