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Article Dans Une Revue IEEE Transactions on Mobile Computing Année : 2022

Adaptive deep feature fusion for continuous authentication with data augmentation

Yantao Li
Mounim El Yacoubi
Gang Zhou

Résumé

Mobile devices are becoming increasingly popular and are playing significant roles in our daily lives. Insufficient security and weak protection mechanisms, however, cause serious privacy leakage of the unattended devices. To fully protect mobile device privacy, we propose ADFFDA, a novel mobile continuous authentication system using an Adaptive Deep Feature Fusion scheme for effective feature representation, and a transformer-based GAN for Data Augmentation, by leveraging smartphone built-in sensors of the accelerometer, gyroscope and magnetometer. Given the normalized sensor data, ADFFDA utilizes the transformer-based GAN consisting of a transformer-based generator and a CNN-based discriminator to augment the training data for CNN training. With the augmented data and the especially designed CNN based on the ghost module and ghost bottleneck, ADFFDA extracts deep features from the three sensors by the trained CNN, and exploits an adaptive-weighted concatenation method to adaptively fuse the CNN-extracted features. Based on the fused features, ADFFDA authenticates users by using the one-class SVM (OC-SVM) classifier. We evaluate the authentication performance of ADFFDA in terms of the efficiency of the transformer-based GAN, GAN-based data augmentation, CNN architecture, adaptive-weighted feature fusion, and OC-SVM classifier. The experimental results show that ADFFDA obtains the best authentication performance w.r.t representative approaches, by achieving a mean equal error rate of 0.01%.
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Dates et versions

hal-03944312 , version 1 (17-02-2023)

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Yantao Li, Li Liu, Huafeng Qin, Shaojiang Deng, Mounim El Yacoubi, et al.. Adaptive deep feature fusion for continuous authentication with data augmentation. IEEE Transactions on Mobile Computing, 2022, pp.1-16. ⟨10.1109/TMC.2022.3186614⟩. ⟨hal-03944312⟩
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