Fundamentals,Architecture of IoTs, IoT Security Requirements, IoT Privacy Preservation Issues, Attack Models – Attacks to Sensors in IoTs, Attacks to RFIDs in IoTs,Attacks to Network Functions in IoTs,Attacks to Back-end Systems,Security in Front-end Sensors and Equipment,Prevent Unauthorized Access to Sensor Data,M2M Security,RFIDSecurity,Cyber-Physical Object Security,HardwareSecurity,Front-end System Privacy Protection,Networking Function Security-IoT Networking Protocols,SecureIoT Lower Layers,SecureIoT Higher Layers,Secure Communication Links in IoTs,Back-end Security -Secure Resource Management,SecureIoTDatabases,Security Products-Existing Testbed on Security and Privacy of IoTs,Commercialized Products