Ent, an endpoint security company created by the team behind RiskIQ and Microsoft Security Copilot, has emerged from stealth with $100 million in seed funding. The round was led by Decibel, with Sequoia, Crosspoint Capital, Craft Ventures, Shield Capital, Felicis, and In-Q-Tel also investing.
This is one of the biggest seed rounds in cybersecurity history. It shows that investors believe current detection tools are not built for a world in which AI agents operate autonomously across company networks.
Ent says its product is already being used by Global 2000 companies in hospitality, financial services, and defence.
When Elias Manousos and Brandon Dixon left Microsoft, they had already achieved something rare in security: building a product that the whole industry was watching.
Manousos led RiskIQ from its early days to a $500 million-plus sale to Microsoft in 2021, then stayed on as a corporate vice president to launch Microsoft Security Copilot. Dixon co-founded PassiveTotal, which RiskIQ acquired, and led product strategy through both acquisitions before helping launch Copilot.
