物联网存在信息安全问题感知层信息安全问题RFID系统安全RFID技术是一种通过射频通信实现的非接触式自动识别技术。每个RFID系统作为一个独立的网络节点通过智能网关接入到网络层。目前,RFID面临的安全威胁主要包括感知节点的本地安全问题、RFID标签访问缺陷、篡改或泄露标识数据、重放攻击、拒绝服务(DOS)攻击等。无线传感网络安全无线传感网作为感知层重要的感知 IoT Existence of Information Security Issues Perception Layer Information Security RFID System Security RFID technology is a non-contact automatic identification technology that is implemented through radio frequency communications. Each RFID system as an independent network node through the intelligent gateway access to the network layer. At present, the security threats facing RFID mainly include the local node security issues, RFID tag access defects, tampering or disclosure of identity data, replay attacks, denial of service (DOS) attacks, and the like. Wireless Sensor Network Security Wireless Sensor Network as the perception of the important perception