各部门、各单位：

应我校陕西省信息通信网络及安全重点实验室的邀请，美国南佛罗里达大学（Universityof South Florida）计算机科学与工程系（Departmentof Computer Science and Engineering）的Yao Liu博士将于2017年6月14日来我校做专题学术讲座，欢迎广大师生参加！报告的具体安排如下：

报告题目：Where Are You From?Confusing Location Distinction Using Virtual Multipath Camouflage

报 告 人：Dr.Yao Liu

报告时间：2017年6月14日（周三）14:30-16:30

报告地点：通信与信息工程学院楼106室

报告摘要：In wireless networks,location distinction aims to detect location changes or facilitateauthentication of wireless users. To achieve location distinction, recentresearch has been focused on investigating the spatial uncorrelation propertyof wireless channels. Specifically, the differences of wireless channel

characteristics are used to distinguishlocations or identify location changes.

However, we discovera new attack against all existing location distinction approaches that arebuilt on the spatial uncorrelation property of wireless channels. In such anattack, the adversary can easily hide her location changes or impersonatemovements by injecting fake wireless channel characteristics into a targetreceiver. Experimental results on our USRP-based prototype show that thediscovered attack can craft any desired channel characteristic with asuccessful probability of 95.0% to defeat spatial uncorrelation based locationdistinction schemes. To defend against this attack, we propose a detectiontechnique that utilizes an auxiliary receiver or antenna to identify these fakechannel characteristics. Experiments demonstrate that our novel detectionmethod achieves a detection rate higher than 91.2% while maintaining a very lowfalse alarm rate.

  Inthis talk, I will introduce this discovered attack and the proposed defensemethods.

报告人简介：美国南佛罗里达大学计算机科学与工程系终身助理教授。本科和硕士毕业于西安电子科技大学。2012年毕业于美国北卡莱罗那州立大学，获计算机科学专业博士学位。博士毕业后，进入美国南佛罗里达大学计算机科学与工程系工作，长期从事计算机及无线网络安全、智能电网安全及关键技术研究等方面的研究。Dr. Yao Liu 在网络安全领域的顶级期刊IEEE Trans.Dependable and Secure Computing、IEEE Journal onSelected Areas in Communications、IEEE Trans. MobileComputing、IEEE Trans. Information Forensics andSecurity、ACM Trans. Information and System Security和安全领域顶级会议INFOCOM、CNS、CCS上发表论文三十余篇，其论文已被多家研究机构引用。主持美国国家自然基金项目、美国国防研究项目、美国佛罗里达州科学研究项目等，项目总经费达1,522,599美元.曾获得ACM CCS 和IEEE S&P 的Travel award，IEEE MASS最佳论文奖，2016获得National Science FoundationFaculty Early Career Development (CAREER) award（美国国家自然科学基金会杰出青年教授奖）

特此通知。

国际                                                   国际交流与合作处 

                    陕西省信息通信网络及安全重点实验室 

                                           2017年6月13日