# Defense.net

**Canonical:** https://apis.io/providers/defensenet/  
**Website:** https://defense.net  
**APIs profiled:** 0

Defense.Net was a cloud DDoS-mitigation company founded in 2012 by Barrett Lyon (also the founder of Prolexic, the original DDoS-mitigation provider). It operated a global constellation of scrubbing/mitigation sites that filtered distributed-denial-of-service attacks against Internet-facing infrastructure in real time. Bessemer Venture Partners led a $9.5M Series A in 2012. In May 2014 the company was acquired by F5 Networks and folded into the F5 Silverline DDoS Protection managed service. Defense.Net no longer operates as an independent business: the defense.net domain now returns an HTTP 301 redirect to the F5 Silverline product page, and there is no independent developer portal, public API, documentation, or SDK surface to enrich. This profile is retained as a historical company record in the API Evangelist network.

## Kin Score — 5.0 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 5.0).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Tags

Company, Cybersecurity, DDoS, DDoS Mitigation, Network Security, Cloud Security, Acquired

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/defensenet/). Scores are computed from the provider's own public artifacts under a published rubric.