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您的检索式：作者名="Bingchen Song"
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| 1 | The influence of TiO 2 ·H 2 O gel on hydrothermal synthesis of SrTiO 3 powders显示文摘 | Shicheng Zhang Yuexin Han Bingchen Chen Xiaoping Song | 2001 | Materials Letters2001，，4： | 1 |
| 2 | An Online Website Fingerprinting Defense Based on the Non-Targeted Adversarial Patch显示文摘Website Fingerprinting(WF)attacks can extract side channel information from encrypted traffic to form a fingerprint that identifies the victim’s destination website,even if traffic is sophisticatedly anonymized by Tor.Many offline defenses have been proposed and claimed to have achieved good effectiveness.However,such work is more of a theoretical optimization study than a technology that can be applied to real-time traffic in the practical scenario.Because defenders generate optimized defense schemes only if the complete traffic traces are obtained.The practicality and effectiveness are doubtful.In this paper,we provide an in-depth analysis of the difficulties faced in porting existing offline defenses to the online scenarios.And then the online WF defense based on the non-targeted adversarial patch is proposed.To reduce the overhead,we use the Gradient-weighted Class Activation Mapping(Grad-CAM)algorithm to identify critical segments that have high contribution to the classification.In addition,we optimize the adversarial patch generation process by splitting patches and limiting the values,so that the pre-trained patches can be injected and discarded in real-time traffic.Extensive experiments are carried out to evaluate the effectiveness of our defense.When bandwidth overhead is set to 20%,the accuracies of the two state-of-the-art attacks,DF and Var-CNN,drop to 10.83%and 15.49%,respectively.Furthermore,we implement the real-time patch traffic injection based on WFPadTools framework in the online scenario,and achieve a defense accuracy of 95.50%with 12.57%time overhead. | Xiaodan Gu Bingchen Song Wei Lan Ming Yang | 2023 | Tsinghua Science and Technology2023，28，6： | 0 |
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