随着智能终端的普及和无线通信技术的发展,基于位置的服务已渗入到人们的日常生活当中.这些服务在给人们的日常生活带来便利的同时,也带来隐私泄漏的风险.针对轨迹数据的推理攻击不仅可分析出目标用户的家庭住址、工作地点等敏感位置信息,甚至可推测出用户的生活习惯、健康状态、宗教信仰等隐私信息.轨迹隐私能否得到妥善保护已成为制约移动互联网发展的瓶颈问题.本文对已有的轨迹隐私保护方法进行了分类描述,并分析已有工作的优缺点,最后指明未来的研究方向.
With the rapid development of GPS-enabled mobile devices and wireless communication technology, location- based services (LBS) have become an essential part of daily life. However, with trajectory information, an adversary can easily infer several facets of users’ lifestyles,such as living habit,health conditions,exercise hobbies,and religious belief, beyond just the locations. The potential abuse of trajectory information by unauthorized entities is evolving into a serious concern in mobile internet. The paper analyzes the existing trajectory privacy protection techniques,and puts forward the future research works.