Ent Security
Category: AI in Cybersecurity
Intent-aware workspace security platform that reads human and AI agent behavior in real time to prevent risky actions before they occur. Ent Security was founded in 2025. The company is led by Elias Manousos. Based in San Francisco, California, United States. Team size: 101-500. Total funding raised: $100M. Latest round: Seed. Key investors include Decibel Partners, Sequoia Capital, Crosspoint Capital Partners, Craft Ventures, Shield Capital, Felicis, In-Q-Tel.
- Founded
- 2025
- Headquarters
- San Francisco, California, United States
- Team size
- 101-500
- Total funding
- $100M
Value proposition
Moves security from reactive detection to preventive control by inferring intent behind user and AI agent actions at the moment of decision, using on-device small AI models for sub-second inference without cloud round-trip latency.
Products and solutions
Ent Intent-Aware Workspace Security Platform — lightweight endpoint agent with on-device AI reasoning that monitors human users, AI agents, and application activity in real time, enforces custom policy, provides just-in-time interventions before risky actions complete. Works on Windows, macOS, Linux with browser extension. Available as SaaS or customer-managed cloud deployment.
Unique value
Industry's first intent-aware workspace security platform that reads what users and AI agents are about to do and intervenes before the incident — not after. On-device AI reasoning enables sub-second prevention at the endpoint.
Target customer
Global 2000 enterprises across hospitality, financial services, and defense sectors; security teams needing insider risk, data loss prevention, AI governance, and incident forensics
Industries served
Hospitality, Financial Services, Defense
Technology advantage
On-device AI reasoning (small models running locally on endpoint) enabling sub-second inference without cloud round-trip; intent-aware behavioral analysis across human users and AI agents; lightweight agent architecture; works with existing EDR/SIEM/SOAR/IAM stacks
How they differentiate
Unlike EDR/XDR tools that detect after the fact, Ent uses on-device small AI models to infer intent in real time and intervene before an action completes. It monitors the full workspace (apps, browsers, chat, AI agents) rather than just process-level behavior, and addresses the new attack surface of non-human identities (AI agents).
Main competitors
CrowdStrike (EDR/XDR), Microsoft Security (Defender, Sentinel), NewCore (AI agent identity security)
Key partnerships
Norseman Defense Technologies (TechNet Cyber event partnership), advisory board includes former security chiefs at Google, Aetna, MassMutual, former NSA director, and former Microsoft Azure cloud security executive
Notable customers
Global 2000 companies in hospitality, financial services, and defense (specific names not publicly disclosed)
Major milestones
June 2025: Trademark filed for ENT SECURITY, June 2026: Emerged from stealth with $100M seed round (one of largest seed rounds in cybersecurity history), Deployed with Global 2000 customers across hospitality, financial services, and defense
Growth metrics
1,319 LinkedIn followers; 14 GitHub followers; deployed with Global 2000 customers at launch
Market positioning
Positioned between traditional EDR/XDR market and the emerging AI governance/agent security space, targeting the "workspace security" category — a new layer that extends endpoint security into real-time prevention across human and AI-driven work.
Geographic focus
United States (headquartered in San Francisco, CA)
Patents and IP
Trademark "ENT SECURITY" filed June 13, 2025 by Athena Formation Inc. (Serial No. 99232625)
About Elias Manousos
Ex-CEO & Founder of RiskIQ (acquired by Microsoft in 2021 for $500M+); Corporate Vice President at Microsoft leading threat intelligence and launching Microsoft Security Copilot; VP of R&D at Securant Technologies (acquired by RSA)
Official website: https://ent.ai