Autonomous Offensive Security Firm XBOW Raises $35 Million in Series C Extension
Autonomous offensive security startup XBOW has raised an additional $35 million in a Series C extension, bringing its total funding to over $270 million to support international expansion and platform development.
Autonomous offensive security firm XBOW has secured $35 million in a Series C funding extension, bringing its total capital raised to over $270 million SecurityWeek. This latest investment follows an initial $120 million Series C round earlier this year, which pushed the company’s valuation past the $1 billion mark SecurityWeek.
The fresh capital, provided by a consortium of investors including Accenture Ventures, DNX Ventures, Liberty Global Tech Ventures, NVentures, Samsung Ventures, and SentinelOne S Ventures, is earmarked for accelerating the company's international growth and go-to-market strategies SecurityWeek.
XBOW’s core offering is an autonomous platform designed to simulate adversarial workflows. By leveraging AI reasoning, the platform continuously tests applications for security vulnerabilities, aiming to identify and validate potential entry points without manual intervention SecurityWeek. Unlike traditional testing methods, the platform executes targeted, autonomous attacks to explore complex attack paths.
A key differentiator of the XBOW approach is its focus on independent validation. Every vulnerability identified by the platform is confirmed through real-world exploitation, providing security teams with reproducible proof of risk SecurityWeek. This process is intended to reduce the burden on human security experts, allowing them to prioritize remediation and judgment over the manual investigation of theoretical vulnerabilities SecurityWeek.
Industry stakeholders have highlighted the platform's ability to operationalize the "attacker’s point of view" at scale. Alex Krongold, director of Corporate Development & Ventures at SentinelOne, noted that the platform acts as an extension of internal red teams, enabling organizations to conduct offensive testing with a speed and depth that was previously difficult to achieve SecurityWeek.
The investment in XBOW reflects a broader trend in the cybersecurity industry toward agentic and AI-driven security platforms. As organizations struggle with the complexity of modern attack surfaces, there is increasing demand for tools that can autonomously validate risks and streamline the defensive lifecycle SecurityWeek. The market continues to see significant capital flow into startups focused on automating offensive security, cloud security, and AI-powered SOC operations SecurityWeek.