Cybersecurity Funding Straiker Raises $64 Million for AI Security Platform The startup’s platform can identify AI agents and provide visibility into their access, behavior, and risks. By Ionut Arghire | June 29, 2026 (10:07 AM ET) Flipboard Reddit Whatsapp Whatsapp Email Cybersecurity startup Straiker today announced raising $64 million in a Series A funding round that brings the total raised by the company to $85 million. The new investment round was co-led by Marathon Management Partners, Citi Ventures, Illuminate Financial, and Workday Ventures, with additional support from Bain Capital Ventures and Lightspeed. Launched in 2025, California-based Straiker has built a platform that helps organizations identify AI agents in their environments and gain visibility into their access, behavior, and risks. The solution, Straiker says, integrates comprehensive AI discovery with pre-deployment adversarial testing that surfaces vulnerabilities and runtime protection that stops threats in real time. Pre-deployment testing is improved based on threat detections from production, while runtime protections are strengthened through the identification of flaws during testing. Additionally, Straiker works with frontier AI labs to gain early knowledge of emerging attack techniques and continuously improve detections and defenses. Advertisement. Scroll to continue reading. The startup’s platform is already trusted by Fortune 500 enterprises to deploy internally built and third-party AI agents. “Our uniqueness comes from pairing the industry’s most comprehensive agentic exploit dataset with an AI-native security engine purpose-built for autonomous threats. That foundation allows us to secure the next generation of AI-powered enterprises,” said Straiker co-founder and CTO Sreenath Kurupati. Related: Nebulock Raises $25 Million for AI-Native Contextual Security Related: Runlayer Raises $30 Million in Series A Funding Related: Dream Raises $260 Million at $3 Billion Valuation Related: NewCore Emerges From Stealth Mode With $66 Million in Funding Written By Ionut Arghire Ionut Arghire is an international correspondent for SecurityWeek. Daily Briefing Newsletter Subscribe to the SecurityWeek Email Briefing for the latest cybersecurity threats, trends, and expert insights. 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Webinar: Why Email Security Keeps Failing (And What Has to Change) July 8, 2026 Join this live webinar as we break down why email-layer defenses alone can't keep pace with the modern phishing ecosystem, how agentic AI is changing the capacity equation for security teams, and more. Register Virtual Event: 2026 Cloud Security Summit July 16, 2026 This year's summit will help organizations learn how to utilize tools, controls, and design models needed to properly secure cloud environments. Interact with leading solution providers and other end users facing similar challenges in securing a variety of cloud deployments. Register People on the Move Mark Carter has been appointed Chief Information Security Officer at Socure. Spektrum Labs has named Mark Cravotta Chief Operating Officer. Philip Martin has joined Uber as Chief Information Security Officer. 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