Manifold, a San Diego, CA-based AI detection & response (AIDR) platform securing autonomous AI on endpoints, has raised $8 million in Seed funding.
Investors
The round was led by Costanoa Ventures, with participation from Cherry Ventures, Rain Capital, Modern Technical Fund, and notable angel investors.
Costanoa Ventures is a specialized early-stage venture capital firm with $2.5B in assets under management. Founded in 2012, Costanoa exists to elevate founders building companies of consequence. The firm leads investments from formation through Series A in applied AI, AI infrastructure, cybersecurity, national security, and fintech. It provides hands-on operational support in areas such as go-to-market strategy and talent recruitment for its portfolio companies.
Manifold Use of Funds
The company will use the funding to develop its AIDR platform and enhance security for agentic AI systems across enterprise environments.
About Manifold
Founded by Neal Swaelens, Oleksandr Yaremchuk, and Michael McKenna, Manifold is an AI detection & response (AIDR) and governance platform built for the agentic enterprise. Manifold secures endpoints, monitors agent behavior at runtime, detects threats in real time, and gives security teams the visibility and context needed to investigate and respond. The platform is designed to be agentless and integrates with existing infrastructure, allowing rapid deployment without additional architectural complexity.
Funding Details
Company: Manifold Security, Inc.
Raised: $8.0M
Round: Seed
Funding Date: March 2026
Lead Investor: Costanoa Ventures
Additional Investors: Cherry Ventures, Rain Capital, Modern Technical Fund, and angel investors
Company Website: https://www.manifold.security/
Software Category: AI Security / Endpoint Protection
Source: https://www.globenewswire.com/news-release/2026/03/18/3258198/0/en/Manifold-Announces-8-Million-Seed-Funding-Round-to-Secure-Autonomous-Endpoint-AI-Agents-at-Runtime.html