Oasis Security, an Israeli cybersecurity firm specialising in identity security, has closed a $120 million Series B funding round led by Accel, with participation from existing investors Sequoia Capital and Greylock Partners. The round values the Tel Aviv-based company at approximately $500 million and brings total funding to $155 million since its 2021 founding.
The investment comes as enterprises rapidly deploy AI agents—autonomous software systems that can execute tasks, access data, and make decisions without human intervention—creating what security analysts describe as a critical new attack surface. According to Crunchbase News, Oasis has developed a platform specifically designed to monitor, control, and secure these AI agents as they interact with corporate systems and sensitive data.
“We’re seeing companies deploy hundreds or thousands of AI agents before they’ve established basic security protocols,” said Idan Gour, co-founder and CEO of Oasis Security, in an interview with CTech. “These agents often have excessive permissions, unclear audit trails, and the ability to chain together actions in ways that traditional security tools weren’t designed to detect.”
The company’s platform provides visibility into AI agent behaviour, enforces least-privilege access policies, and monitors for anomalous actions that could indicate compromise or misuse. Oasis reports that its technology is currently protecting more than 50 enterprise customers, including several Fortune 500 companies, though it declined to name specific clients.
The funding arrives as analyst firms project the AI agent security market will grow from virtually nothing in 2023 to several billion dollars by 2028. Gartner recently identified “AI agent security” as an emerging category requiring urgent attention, whilst Bloomberg reported that major cloud providers including Microsoft and Google are developing their own agent security capabilities.
For enterprises, the business impact is substantial. AI agents with compromised credentials or excessive permissions could exfiltrate vast quantities of data, execute unauthorised transactions, or manipulate business processes at machine speed. Traditional identity and access management systems, designed for human users, struggle to handle the volume and velocity of agent actions.
The funding round signals growing investor confidence in specialised security tools for AI infrastructure. Accel partner Arun Mathew, who will join Oasis’s board, noted that “every enterprise adopting AI agents faces the same fundamental question: how do we secure systems that act autonomously on our behalf?”
Competitors in the emerging space include established identity security vendors expanding their offerings, such as CyberArk and SailPoint, as well as AI-native startups. However, Oasis’s early focus on agent-specific security challenges may provide a first-mover advantage as enterprises prioritise this risk category.
The company plans to use the capital to expand its engineering team, particularly in its Tel Aviv headquarters, and to accelerate go-to-market efforts in North America and Europe. Oasis currently employs approximately 120 people and expects to reach 200 by year-end.
Industry observers will be watching whether Oasis can maintain its independent position or becomes an acquisition target for larger security platforms seeking to add agent security capabilities. The company’s ability to integrate with existing security operations centres and demonstrate measurable risk reduction will prove critical as the category matures and competition intensifies.
The $120 million raise represents one of the largest Series B rounds in cybersecurity this year, underscoring how rapidly AI agent security has moved from theoretical concern to board-level priority for enterprises deploying autonomous systems at scale.
