FlagThis — Daily Cybersecurity Intelligence Briefing

Armadin, an AI-native offensive security startup founded by Mandiant creator Kevin Mandia, has secured $255.5 million in Series B funding at a $2.5 billion post-money valuation. Led by Andreessen Horowitz and Accel, the capital will scale Armadin’s Agent Swarm Orchestrator and AI-Native Offensive Engine. The platform utilizes autonomous AI agents to perform Continuous Autonomous Red Teaming (CART), emulating adversary tactics across cloud, on-prem, and hybrid environments. By integrating with existing SIEM, SOAR, and XDR stacks, the platform validates exploit paths and generates real-time remediation playbooks, shifting security posture from periodic testing to persistent, automated validation.