LATIDIA · Ciberseguridad

ReplayAudit: Auditoría de ajuste de LLM subcontratado a través de registros sellados y repetición selectiva

arXiv: 2611.09607v1Tipo de anuncio: nuevo Resumen: Auditar el ajuste fino de LLM subcontratado requiere verificar la capacitación de un proveedor no confiable mientras se controla el costo de verificación. El muestreo uniforme ignora las señales de tiempo de entrenamiento,

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arXiv:2611.09607v1 Announce Type: new Abstract: Auditing outsourced LLM fine-tuning requires checking an untrusted provider's training while controlling verification cost. Uniform sampling ignores training-time signals, while checking a suspicious record can require replaying several preceding steps. We present ReplayAudit, a telemetry-guided auditing system that seals training records before challenges and independently replays sampled intervals from sealed checkpoints. Loss changes and parameter-update norms guide stratified random sampling; replay determines whether the selected computation agrees with its records. We relate sampling probabilities to replay work and evaluate the system on real LoRA training. A 7B BF16 prototype rejects a false update-norm report during a random audit; targeted checks also reject false loss reports