Rilian Raises $17.5 Million for AI-Native Security Orchestration

Cybersecurity startup Rilian today announced raising $17.5 million in combined seed and seed extension funding. The funding round was led by 8VC, First In, and Tamarack Global, with additional support from 8090 Industries, Liquid 2 Ventures, Perot Jain, and Protego Ventures. Founded in 2024, McLean, VA-based Rilian describes itself as an agentic systems integrator and technology provider that leverages AI to provide defense capabilities to government, critical infrastructure, and law enforcement organizations. The startup has built Caspian, an agentic security orchestration platform that provides cyber and defense technology and autonomous delivery capabilities, along with a single view across stacks and toolsets. Rilian’s solution helps organizations access, deploy, and automate security capabilities across cloud, on-premises, air‑gapped, and compliance-constrained environments. It leverages agents pre-trained to boost analysis, anticipate attacks, and capture knowledge. The platform can integrate, operate, and automate cybersecurity across OT environments, and assess risks and automate response at the national level. Rilian will use the new funding to grow its marketing and engineering teams, advance R&D, and expand its presence in the US, the Gulf Cooperation Council (GCC) countries, and other allied countries. The company has partnered with SentinelOne, Censys, and SimSpace to advance cyber defenses for critical infrastructure. “Rilian is redefining how sovereign organizations access and operationalize advanced cyber and defense capabilities. They sit at the intersection of AI, national security, and critical infrastructure; exactly where the stakes are highest, and the legacy playbook is failing,” said 8VC partner Alex Moore. Related: Artemis Emerges From Stealth With $70 Million in Funding Related: Capsule Security Emerges From Stealth With $7 Million in Funding Related: Trent AI Emerges From Stealth With $13 Million in Funding Related: Variance Raises $21.5M for Compliance Investigation Platform Powered by AI Agents WRITTEN BY Ionut Arghire Ionut Arghire is an international correspondent for SecurityWeek. 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