XBOW secures $35M Series C extension, pushing valuation past $1B

According to SecurityWeek News, autonomous offensive security firm XBOW has announced raising $35 million in an extension to its Series C funding round, bringing total funding to more than $270 million and valuing the company at over $1 billion after the initial Series C that raised $120 million. The new investment came from Accenture Ventures, DNX Ventures, Liberty Global Tech Ventures, NVentures, Samsung Ventures, and SentinelOne S Ventures.

The company said the money will be used to accelerate go-to-market and international growth efforts. XBOW has developed a platform that uses AI reasoning and adversarial workflows to continuously test applications for vulnerabilities, operating autonomously to identify and validate security holes, with potential findings independently validated through real exploitation.

SentinelOne’s director of Corporate Development & Ventures, Alex Krongold, described XBOW as enabling security teams to scale offensive testing with speed and depth, effectively extending in-house red teams. 6 May 2026