XBOW Secures Additional $35M in Series C to Scale Autonomous Cybersecurity Platform

Cybersecurity used to feel like a medieval town hiring extra guards after somebody already stole the horses. A lot of alerts. A lot of dashboards blinking like slot machines in a casino nobody wins at. Then XBOW showed up carrying something the market has been quietly terrified of building itself: an autonomous hacker that does not get tired, does not miss patterns, and does not need 3 weeks to schedule a penetration test between conference calls and catered sandwiches.

Seattle-based XBOW just secured an additional $35M in Series C financing, pushing total funding beyond $270M and reinforcing a valuation north of $1B. The extension brought in Accenture Ventures, DNX Ventures, Liberty Global Tech Ventures, NVentures, Samsung Ventures, and SentinelOne S Ventures. Earlier this year, DFJ Growth and Northzone led the company’s $120M Series C alongside Sequoia Capital, Altimeter, Sofina, Alkeon Capital, and NFDG Ventures. That investor list reads like the Avengers of infrastructure and security capital. When this many serious operators crowd into the same room, it usually means they see something the broader market has not fully processed yet.

And the wild part? XBOW was founded in 2024. That is not a typo. Some companies spend a decade trying to find product-market fit while burning enough capital to fund a minor space program. XBOW hit unicorn status in roughly 2 years because the company understands a brutal truth most enterprises are still dancing around: attackers already use AI, move at machine speed, and do not care about your quarterly planning cycle.

Oege de Moor has seen this movie before. Founder of Semmle. Builder behind GitHub Advanced Security. One of the minds connected to GitHub Copilot. Oege de Moor did not stumble into the AI era because venture capital discovered a shiny acronym. He helped build the infrastructure underneath the conversation everybody else is now trying to monetize. XBOW feels less like a startup and more like the continuation of a thesis that has been quietly developing for years: software development accelerated, threats accelerated with it, and traditional security workflows started looking like mall security trying to stop a Formula 1 car with a flashlight.

XBOW’s platform continuously discovers and validates vulnerabilities using AI reasoning and adversarial workflows that emulate sophisticated attackers. The company calls it an autonomous hacker, which sounds dramatic until you realize most organizations are still relying on periodic testing designed for a world where applications updated every few months instead of every few hours. More than 100 customers worldwide are already leaning into XBOW because security teams do not need more noise. They need proof. They need validated vulnerabilities instead of endless false positives clogging systems like digital cholesterol.

The leadership team behind this run deserves real attention too. Alongside Oege de Moor are Nico Waisman, CISO, Niroshan Rajadurai, CRO, Jonaki Egenolf, CMO, Aqeel Siddiqui, Chief Product Officer, Albert Ziegler, Head of AI, Andrew Rice, Head of Engineering, Dean Breda, General Counsel, Jordan McTaggart, Head of Finance & BizOps, and WonLae Lee, General Manager, South Korea. Different disciplines, same objective. Product, AI, engineering, legal, revenue, operations, global expansion. XBOW is not just building software. XBOW is building pressure in a market already realizing the old security model cannot keep up with what is coming next.