AegisAI, a cybersecurity startup founded by former Google Safe Browsing and reCAPTCHA leaders Cy Khormaee and Ryan Luo, has raised $13 million in seed funding led by Accel alongside Foundation Capital. The company is developing AI-native email security to combat sophisticated threats that traditional rule-based systems struggle to detect. AegisAI deploys autonomous AI agents that analyse every aspect of an email to stop threats before they reach inboxes. The system continuously learns from real-world attacks and reduces false positives by 90% compared to legacy systems, according to the company. The startup has already secured customers including Mesh, Stelliant and Lokker. The funding will support product development, engineering team expansion and go-to-market efforts as AegisAI emerges from stealth mode.

AegisAI, an AI-native email security company backed by Accel and Foundation Capital, has released research showing AI-generated email attacks grew fivefold in 2025, now bypassing traditional security filters more than 50% of the time. The study analysed over 20,000 phishing, scam and malware emails, finding that AI-generated attacks are 75% more effective at evading traditional filters. In response, AegisAI is launching Project Vanguard, an autonomous defence AI agent that pursues threats hiding behind CAPTCHAs and cloaked pages. Built by the team behind Google's reCAPTCHA, Vanguard extends protection beyond the inbox by following suspicious links and attachments to their malicious destinations. The company, founded in 2025 by former Google security engineers, will demonstrate Vanguard at RSA Conference 2026, with early customer testing beginning later this year.