7AI raised $130 million in the largest cybersecurity Series A funding round in history, validating autonomous AI agents as the infrastructure solution to enterprise security operations that can’t scale with traditional approaches.

The Boston-based company, led by Cybereason co-founder Lior Div, has processed over 2.5 million security alerts and completed more than 650,000 autonomous investigations in just 10 months since emerging from stealth. The Index Ventures-led round, with participation from Blackstone Innovations Investments, signals enterprise confidence in agentic security infrastructure that replaces human-driven alert triage with AI agents that investigate threats autonomously.