doxx.net

Network Security

Miami startup building Agentic Defined Networking: private, policy-controlled networks for people and AI agents with built-in threat blocking.

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62/100Incremental Innovator

Overview

doxx.net is a Miami-based networking security company founded by Barrett Lyon, previously founder of Prolexic (acquired by Akamai). Its Agentic Defined Networking (ADN) platform lets people and AI agents create private networks with defined connectivity and security policies.

The platform is designed so that agents browsing and acting on a user’s behalf operate in an environment with controlled egress and built-in threat protection, blocking connections to known malicious destinations. An open beta launched on October 1, 2026, alongside a Series A led by Andreessen Horowitz.

Innovation Matrix Assessment

Innovation Velocity 7/10

Defines a new 'agentic defined networking' category and shipped an open beta within a year of founding.

Operational Value 6/10

Addresses a real CISO gap: controlling where autonomous agents can connect, though production operational outcomes are not yet documented.

Market Momentum 6/10

Series A led by Andreessen Horowitz (reported $38M; one outlet reported $24.6M) and a founder with a prior acquisition, but the product is in open beta.

Category Disruption 7/10

Reframes networking as agent-scoped, policy-defined private networks rather than a bolt-on proxy or VPN; promising but unproven as a category.

Real-World Efficacy 4/10

No independent tests or named customer case studies found; beta stage.

Enduring Relevance 7/10

Autonomous agents acting on the open internet are likely to persist, making agent-level network control durable.

Why CISOs Should Care

AI agents browsing and acting with user credentials create new egress and exfiltration paths; this gives a network-layer control point for them.

What Makes It Different

It treats the agent, not the device or user, as the network endpoint, with policy and threat blocking built into the private network.

The Matrix Verdict

62/100 — INCREMENTAL INNOVATOR

doxx.net lands in the Incremental Innovator tier. The concept is fresh and well-funded, but evidence of real-world efficacy is thin until the beta matures.

Editorial Note: Claims vs. Verified Findings

Capability descriptions come from the company's launch materials; the funding amount is reported inconsistently ($38M in most outlets, $24.6M in Dealroom). No independent efficacy testing was found.

Sources

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