Xbow, an AI security startup, has reached a valuation exceeding $1 billion following a successful $120 million funding round. The round was led by DFG Growth and Northzone, with participation from Alkeon Capital, Sofina, and existing investors such as Sequoia Capital and Altimeter Capital. Xbow, which specializes in AI software for detecting application security vulnerabilities, plans to expand its workforce from 150 to several hundred by year-end. The company boasts over 100 clients, including Moderna and Samsung Electronics, and reports strong demand in South Korea.