RunSybil

Based in the US, RunSybil offers an AI-powered offensive security platform that continuously tests applications and infrastructure to uncover vulnerabilities, ensuring robust cybersecurity for critical systems. RunSybil, founded in 2023, operates from San Francisco, US, focusing on automated security solutions. The company raised USD 40. 00 mn in a recent funding round led by Khosla Ventures, participating alongside Conviction, Menlo Ventures, and Section 32.

Previously, no pivots or changes in strategy have been noted. RunSybil specializes in an AI-powered offensive security platform that offers continuous testing of applications and infrastructure to identify exploitable vulnerabilities. The core product, Sybil, leverages advanced reasoning techniques to emulate the approach of elite human security researchers, allowing it to probe for vulnerabilities across an organization's entire technology stack with each deployment. This platform is designed to serve critical systems that manage customer data, transactions, and access, ensuring enhanced security beyond traditional static scans or periodic penetration tests.

RunSybil’s clients include organizations that require ongoing security assessments, such as high-risk application developers and cloud service providers. The platform is marketed to enterprises across various geographical regions, including North America and Europe, where stringent regulatory requirements for data protection drive demand for comprehensive security solutions. RunSybil's revenue model is centered on a subscription-based service that provides continuous security coverage for its clients. The company engages in direct business-to-business transactions, offering tailored security solutions based on the unique needs of each enterprise client.

Clients typically enter into agreements for ongoing access to the Sybil platform, which includes regular updates and assessments that align with their development cycles. This approach not only enhances security posture but also optimizes operational efficiency, as clients receive timely feedback on vulnerabilities with no delays associated with traditional pentesting timelines. While specific pricing plans are not publicly disclosed, the company’s offerings are structured to provide measurable improvements in security outcomes, thereby justifying the investment made by its clients in proactive security measures. In March 2026, RunSybil raised USD 40.

00 mn in venture funding led by Khosla Ventures, with participation from Section 32, Menlo Ventures, and Conviction. The company will use the funding to advance and scale its artificial intelligence–powered cybersecurity platform that autonomously conducts continuous penetration testing to identify and remediate critical software vulnerabilities. RunSybil plans to enhance its product offerings and expand into new markets across North America and Europe, targeting the growing demand for cybersecurity solutions driven by regulatory requirements.