Straiker Raises $64 Million for AI Security Platform

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. 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. More from Ionut Arghire More Klue Breach Victims Identified as Hackers Get Hacked Nebulock Raises $25 Million for AI-Native Contextual Security Linux Foundation Unveils New Open Source Security Project Akrites Russian APT Deploys ‘StockStay’ Backdoor Against Ukrainian Targets Runlayer Raises $30 Million in Series A Funding GitLab Patches Code Execution, Information Disclosure Vulnerabilities 25-Year-Old Vulnerability Patched in Curl NIST Opens Updated IoT Security Guidance to Public Review Latest News WhatsApp Rolling Out Username Feature to Bolster Phone Number Privacy Researchers Demo New Claude Code Attack Using Harmless-Looking Repositories to Hijack Developer Machines Insurance Regulators Group NAIC Hit in Oracle PeopleSoft Hack ‘DirtyClone’ Linux Kernel Vulnerability Leads to Root Access OpenAI and Anthropic Limit New AI Models to Trump-Approved Customers During Cybersecurity Review US Offers $10 Million Bounty for Russian State Hackers as Messaging App Attacks Evolve OpenAI Unveils GPT-5.6 Sol as Its Most Advanced Cybersecurity AI Chinese Framework Powers 200,000 Scam Sites Trending 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. More People On The Move Expert Insights When Information Becomes The Attack Surface – Understanding AI Agent Traps From hidden content injections to cognitive state poisoning, attackers are turning trusted data sources into traps for autonomous AI. (Etay Maor) What The Latest ShinyHunters Breaches Reveal About Modern Cyberattacks Groups like ShinyHunters are demonstrating that attackers do not necessarily need malware or zero-day exploits to cause massive damage. (Torsten George) No Exploits Required Four decades of incident response experience suggest that exploits are often the symptom, not the root cause, of today’s cybersecurity failures. (Tod Beardsley) After AI Reaches Production: 12 Ways Security Teams Can Take Control Security teams need more than visibility into AI applications, they need a repeatable framework for monitoring, investigating, and defending them in production. (Joshua Goldfarb) Everybody Is Vibe Coding But Nobody Told The Security Team AI-driven development is not something organizations can or should block. But it must be governed. (Danelle Au) Flipboard Reddit Whatsapp Email