promptguard2-multitask-onnx

Prompt Guard 2 Multitask ONNX

This repository contains an ONNX export of a multitask security classifier built from meta-llama/Llama-Prompt-Guard-2-86M.

The model was fine-tuned as a single multitask adapter on two security-focused tasks and then merged into a standalone model before ONNX export.

Base model

• Base model: meta-llama/Llama-Prompt-Guard-2-86M
• Architecture: sequence classification
• Export format: ONNX
• Primary runtime: ONNX Runtime / ONNX Runtime Mobile

Tasks

This model is intended to score text as BENIGN or MALICIOUS across two security-related input types:

1. Phishing email detection
2. Prompt injection detection

The model uses a shared binary label space:

• BENIGN
• MALICIOUS

Training data

This multitask model was trained using data derived from:

• naserabdullahalam/phishing-email-dataset
• marycamilainfo/prompt-injection-malignant

Additional benign prompt-style examples were included so the prompt-injection side of the multitask classifier had both positive and negative examples.

Input format

During training and inference, inputs are prefixed with a simple modality tag:

• [EMAIL] ...
• [PROMPT] ...

Example inputs

Phishing email example

[EMAIL] Subject: Verify your payroll account now. Body: Your payroll access will be suspended unless you confirm your credentials here: http://example-login-reset.com