AegisAI Raises $36M Series A
AegisAI, based in San Francisco, is an email security company that utilizes large language models to defend against AI-powered spear phishing. The company has announced a $36 million Series A funding round, bringing its total capital raised to $49 million.
The round was led by Battery Ventures, with participation from existing investors Accel and Foundation Capital.
Capital from this round will be used to scale the company's fleet of autonomous defense agents, accelerate the general availability of Vanguard, its threat-hunting agent, and expand enterprise go-to-market operations.
Founded in 2025 by former Google security leaders Cy Khormaee and Ryan Luo, AegisAI is dedicated to protecting organizations from sophisticated, AI-crafted phishing and business email compromise. The company uses autonomous AI agents to analyze the intent and identity behind messages to secure enterprise communications.
Funding Details
Company Website: https://aegisai.ai
Company: AegisAI
Raised: $36M
Round: Series A
Funding Date: July 23, 2026
Lead Investor: Battery Ventures
Additional Investors: Accel, Foundation Capital
Company Website: https://aegisai.ai
Software Category: Cybersecurity