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Le dije a un atacante de IA que ganó. Perdió.
Fenix · 2026-06-20 · via DEV Community

Fenix

Cada vez que un LLM dice "No puedo ayudarte con eso", le está regalando un gradiente de optimización al atacante.

No es intuición. Es matemática:

ASR = 1 - (1 - β_D · (1 - β_A))^N  →  1 cuando N → ∞

Cada refusal predecible es una pista. El atacante ajusta. Itera. Y eventualmente gana.

¿Y si en vez de decir "no", el sistema dice "sí" — pero con trampa?

Presento misdirection-proxy v0.5.0

Un gateway de seguridad que reemplaza los bloqueos predecibles por desinformación controlada. Cuando detecta un ataque, no lo bloquea: lo engaña. Genera respuestas que parecen exitosas al juez automatizado del atacante pero que son operativamente nulas.

El atacante cree que va ganando. En realidad, su optimizador está colapsando.

Cómo funciona

4 capas de defensa en una sola petición HTTP:

1. Context Filter — Analiza datos externos (RAG, herramientas, documentos) buscando inyecciones indirectas ocultas.

2. Intention Detector — Clasifica el prompt en 5 categorías: jailbreak, exfiltración, ejecución de código, prompt injection, ingeniería social.

3. Adaptive Controller — Si el atacante persiste (mismo X-Session-ID), escala la intensidad de la defensa logarítmicamente: γ_A(t) = min(0.71 + ln(1 + 0.3·ΣM_i), 0.99)

4. CMPE Engine — Genera la respuesta de engaño: preámbulo positivo + contenido reshuffleado + pregunta de seguimiento. Parece exitosa. Es inofensiva.

El colapso del atacante

Ciclo γ_A PPV del atacante Estado
1 0.71 0.07 Recibe basura, ajusta
2 0.97 0.01 Gradiente corrupto
3+ 0.99 ~0.00 Colapso

Tras 3 ciclos, el atacante converge a una región muerta del espacio latente. No puede progresar. Cree que va ganando porque recibe respuestas "exitosas". Pero cada respuesta es un falso positivo inducido.

Pruébalo ahora

git clone https://github.com/amurlaniakea/misdirection-proxy.git
cd misdirection-proxy
docker compose up -d
docker compose --profile bench run --rm bench

El benchmark ejecuta 30 ataques (directos, indirectos, RAG injection) y genera un reporte JSON con PPV, ASR, γ_A(t) y latencia.

Stack

  • Motor CMPE — 3 pasos de desinformación controlada
  • Detector — 5 categorías de amenazas
  • Gateway HTTP — FastAPI, compatible con OpenAI API
  • Controlador Adaptativo — Escalado logarítmico de γ_A
  • Context Filter — Inyecciones indirectas en RAG/tools
  • Benchmark — Simulador adversarial dual-mode

147 tests pasando.

Links


¿Defensa por engaño en producción? Leo opiniones.