SEATTLE -- XBOW, the leader in autonomous offensive security, announced it has raised $120 million in Series C financing. The round, led by DFJ Growth and Northzone, values the company at over $1 billion.

As part of DFJ Growth’s investment, Ramin Sayar, Venture Partner, will join the XBOW Board of Directors. Drawing on his experience as the former CEO of Sumo Logic, he will help the company scale operations and expand in the enterprise market. The round also includes participation from new investors Sofina and Alkeon Capital, as well as existing investors Altimeter, NFDG Ventures, and Sequoia Capital.

Until now, attackers were constrained by talent. Even the most sophisticated adversaries could not target every system, every version, all the time. With AI, that constraint is gone. Attackers now operate continuously and at scale, probing every release, every environment, and every exposed surface. At the same time, engineering teams are shipping faster than ever. Traditional human-led penetration testing cannot keep pace with AI-driven attackers and modern development cycles.

“When I founded XBOW in January 2024, few believed AI could truly think like a hacker and operate at machine speed. We proved it. XBOW reached the top of the HackerOne leaderboard and is now deployed at some of the most security-forward companies in the world,” said Oege de Moor, Founder and CEO, XBOW. “Attackers are already using AI. Defenders need to move just as fast. XBOW provides that continuous speed, and this funding enables us to bring it to the entire industry.”

Cybersecurity Enters the Autonomous Era

Autonomous offensive security is emerging as the next evolution of security testing. Rather than relying on point-in-time manual pentests, organizations are shifting toward continuous, intelligent coverage that mirrors how modern attackers operate.

XBOW applies AI reasoning and adversarial workflows modeled on real-world attack techniques to identify and validate vulnerabilities at machine speed. Its platform continuously tests applications, uncovering deep exploits often missed by manual testing, while maintaining a low false-positive rate.

“XBOW was the first to demonstrate how large language models could be applied to offensive security at scale,” said Barry Schuler, Co-founder and Managing Partner, DFJ Growth. “The company didn’t just prove the technology, it also proved market demand. By combining AI reasoning with real-world adversarial expertise, XBOW is bringing the autonomous hacker to life.”

“XBOW is rapidly emerging as a category leader, with Fortune 500 and global enterprises already relying on the platform as a mission-critical layer in their security stack,” said Sanjot Malhi, Partner, Northzone. “Oege and the team have built an extraordinarily capable AI-driven security platform in a remarkably short time, and we’re thrilled to partner with them as they scale.”

Proof Achieved. Now Scaling.

Over the past year, XBOW proved that autonomous systems can operate safely and effectively in live production environments. This investment will accelerate the company’s expansion across enterprise markets, continued product innovation, and international growth.

From day one, XBOW has paired autonomous systems with some of the world’s top hackers, who help train its autonomous hacker to think like a real adversary. The company was founded by Oege de Moor, creator of GitHub Copilot and GitHub Advanced Security, and built alongside a core group of engineers from the original Copilot team. Chief Information Security Officer Nico Waisman, formerly CISO at Lyft, joined from the outset and has helped shape XBOW’s approach to deploying autonomous systems safely in complex environments. Nico assembled a team of some of the best human hackers in the world to teach the XBOW system its trade.

The company has further strengthened its leadership by naming Ron Gabrisko to its Board, Jonaki Egenolf as Chief Marketing Officer, Dean Breda as General Counsel, and Niro Rajadurai as Chief Revenue Officer. As part of its global expansion strategy, XBOW also appointed WonLae Lee as General Manager, South Korea, at the beginning of 2026.