YC Spring 2026 (P26) founder

Eduardo Velasco

Founder of Silmaril, Runtime security for AI that self-improves

Silmarilb2b1 public signals

Company

Eduardo Velasco is listed as a founder of Silmaril. Silmaril is the first runtime security for AI that self-improves. It understands application context to block 2x as many threats as current SOTA defenses with 10x lower latency. Customers plug us into agentic frameworks like LangGraph with 5 lines of code. Silmaril has stopped $28M of damages for customers.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. X

    @bcherny, I guess you didn’t look hard enough.

    @bcherny, I guess you didn’t look hard enough. In 11 minutes, Codex with Silmaril Ruby found an indirect prompt injection that bypassed Fable and installed an untrusted package on the host. The race is never over. Full trace: https://t.co/GA116tnzVq