報告題目：New security issues in wireless networks with deep learning
報告人：石怡 教授
單位：美國智能自動化公司/美國弗吉利亞理工大學(xué)
時間：2019年8月19日（周一）下午3點
地點：翡翠湖校區(qū)逸夫科技樓A座1106
摘要：Machine learning finds rich applications in wireless communications such as spectrum sensing and signal classification. While there is a surge of interest to understand the security issues of machine learning, their implications have not been understood yet for wireless applications that are susceptible to various attacks due the open and broadcast nature of wireless communications. This talk presents new techniques built upon adversarial machine learning and applys them to three types of wireless attacks, namely jamming, spectrum poisoning and primary user emulation attacks. By observing the spectrum, the adversary starts with an exploratory attack to infer the channel access algorithm of a transmitter by building a deep neural network classifier that predicts the transmission outcomes. Based on these prediction results, the wireless attack continues to either jam data transmissions or manipulate sensing results to fool the transmitter into making wrong transmit decisions in test phase. When the transmitter collects sensing results as training data to retrain its channel access algorithm, the adversary launches a causative attack to manipulate the input data to the transmitter over the air. These attacks with different levels of energy consumption lead to significant loss in throughput and success ratio in wireless communications. Then a defense mechanism is introduced that systematically increases the uncertainty of the adversary at the inference stage and improves the performance. Results provide new insights on how to attack and defend wireless communications using deep learning.
報告人簡介：
石怡，1998年畢業(yè)于中國科技大學(xué)零零班獲取學(xué)士學(xué)位，2001年畢業(yè)于中科院軟件所（現(xiàn)中科院大學(xué)）獲取碩士學(xué)位，2003年畢業(yè)于美國弗吉利亞理工大學(xué)獲取第二個碩士學(xué)位，2007年畢業(yè)于美國弗吉利亞理工大學(xué)獲取博士學(xué)位。現(xiàn)為IEEE高級會員，美國智能自動化公司首席研究員，美國弗吉利亞理工大學(xué)兼職教授。石怡博士是國際上知名的無線網(wǎng)絡(luò)優(yōu)化專家，已經(jīng)在IEEE Transactions on Mobile Computing等著名期刊上和IEEE INFOCOM等著名會議上發(fā)表論文150多篇，并主編出版專著1部，參與編寫專著5部。2006年，石博士以華盛頓區(qū)第一名的身份獲得由中國政府頒發(fā)的“國家優(yōu)秀自費留學(xué)生”的獎勵；2008年和2011年，石博士的論文先后兩次在IEEE INFOCOM會議中獲得最佳論文獎及最佳論文入圍獎。石博士擔(dān)任IEEE Communications Surveys and Tutorials編輯，擔(dān)任過3個workshop的技術(shù)委員會主席和近50個國際會議的技術(shù)委員會委員，包括IEEE INFOCOM, ACM MobiHoc, IEEE MILCOM, IEEE ICC, IEEE WCNC, IEEE GLOBECOM等。
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