qilong-zhang / intermediate-level-attack

[ICCV 2019] Enhancing Adversarial Example Transferability with an Intermediate Level Attack (https://arxiv.org/abs/1907.10823)

Enhancing Adversarial Example Transferability with an Intermediate Level Attack

This repository includes the official PyTorch implementation of Enhancing Adversarial Example Transferability with an Intermediate Level Attack (ICCV 2019).

Summary: We fine-tune adversarial perturbations for better transferability by maximizing projection onto the perturbation at an intermediate layer. We demonstrate improved transferability across a wide range of attacks, including SOTA ones. In addition, we demonstrate that the choice of layer makes a substantial impact on transferability.

Software Requirements

This codebase requires Python 3, PyTorch 1.0+, Torchvision 0.2+, and pretrainedmodels (Cadene's repo, installed via pip install pretrainedmodels). In principle, this code can be run on CPU but we assume GPU utilization throughout the codebase.

Usage

Demo

To generate an adversarial example with enhanced transferability using our method (using I-FGSM as the baseline attack), please run a command such as the following:

python demo.py --modeltype ResNet18 --layerindex 4 --imagepath test_images/bear_test_image_label_296.JPEG --imagelabel 296 --outpath adv_out.jpg --epsilon 0.03

This command uses ILA to generate a transferable adversarial (with epsilon=0.03) for the given bear image.

The output is:

True label: 296 (ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus)
ResNet18 (source model)
Prediction on original: 296 (ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus)
Prediction on I-FGSM: 257 (Great Pyrenees)
Prediction on ILA: 155 (Shih-Tzu)

---Transfer Results Follow---
DenseNet121 (transfer model)
Prediction on original: 296 (ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus)
Prediction on I-FGSM: 296 (ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus)
Prediction on ILA: 222 (kuvasz)

alexnet (transfer model)
Prediction on original: 296 (ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus)
Prediction on I-FGSM: 296 (ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus)
Prediction on ILA: 222 (kuvasz)

SqueezeNet1.0 (transfer model)
Prediction on original: 296 (ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus)
Prediction on I-FGSM: 257 (Great Pyrenees)
Prediction on ILA: 257 (Great Pyrenees)

As can be seen from the output, the original I-FGSM perturbation on ResNet18 transfers to only 1 model (SqueezeNet), whereas the ILA perturbation transfers to all 3 models.

Evaluate on All Images of a Dataset

To evaluate the performance of the attack on cifar10, run

python all_in_one_cifar10.py --source_models ResNet18 --transfer_models ResNet18 DenseNet121 GoogLeNet SENet18 --out_name=test.csv  --attacks ifgsm --num_batches=50 --batch_size=32

Checkpoints of our models. You can replace the checkpoints paths in cifar10_config.py.

Full usage:

usage: all_in_one_cifar10.py [-h] --source_models SOURCE_MODELS
                             [SOURCE_MODELS ...] --transfer_models
                             TRANSFER_MODELS [TRANSFER_MODELS ...] --attacks
                             ATTACKS [ATTACKS ...] --num_batches NUM_BATCHES
                             --batch_size BATCH_SIZE --out_name OUT_NAME

optional arguments:
  -h, --help            show this help message and exit
  --source_models SOURCE_MODELS [SOURCE_MODELS ...]
                        <Required> source models
  --transfer_models TRANSFER_MODELS [TRANSFER_MODELS ...]
                        <Required> transfer models
  --attacks ATTACKS [ATTACKS ...]
                        <Required> base attacks
  --num_batches NUM_BATCHES
                        <Required> number of batches
  --batch_size BATCH_SIZE
                        <Required> batch size
  --out_name OUT_NAME   <Required> out file name

Run all_in_one_imagenet.py to evaluate on imagenet with similar usage, with the imagenet val folder path.

To visualize the output csv of any of the above runs, simply open the visualize.ipynb notebook and change df = pd.read_csv('ifgsm_imagenet_0.03_new.csv') to read from your specific csv. Then run all the cells in the notebook to obtain a concise summary.

Attribution

If you use this code or our results in your research, please cite:

@article{Huang2019EnhancingAE,
  title={Enhancing Adversarial Example Transferability with an Intermediate Level Attack},
  author={Qian Huang and Isay Katsman and Horace He and Zeqi Gu and Serge J. Belongie and Ser-Nam Lim},
  journal={ArXiv},
  year={2019},
  volume={abs/1907.10823}
}