Abstract. This paper gives a comprehensive analysis of security with respect to NFC. It is not limited to a certain application of NFC, but it uses a systematic approach to analyze the various aspects of security whenever an NFC interface is used. The authors want to clear up many misconceptions about security and NFC in various applications. The paper lists the threats, which are applicable to NFC, and describes solutions to protect against these threats. All of this is given in the context of currently available NFC hardware, NFC applications and possible future developments of NFC.