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P2P网络中存在的安全隐患和面临的攻击。产生这一系列安全隐患的主要原因是对等网技术在最初设计时并没有考虑安全因素,P2P系统中的各节点彼此陌生,节点间以匿名的方式进行通信或文件信息的共享和互换。每个节点可随意加入或退出网络,节点的状态不确定,节点标识不唯一,各节点基于同一兴趣自主地处理与其他节点的交互,其个人行为后果没有任何责任可言。因此,如果实现一种机制将在P2P网络中存在一些提供欺骗性或者恶意服务的节点进行隔离,以避免同此类节点进行交互而使用其伪造的、错误的或误导性的信息和服务是P2P安全面临的主要问题。
P2P networks exist in the security risks and attacks. The main reason for this series of security risks is that the peer-to-peer technology did not consider the security factor when it was originally designed. Each node in the P2P system is not familiar to each other, and the nodes are anonymous to share or exchange information or files. Each node can join or leave the network at will. The state of the node is indefinite, and the node identifier is not unique. Each node processes the interaction with other nodes autonomously based on the same interest, and the individual behavior has no responsibility at all. Therefore, if a mechanism is implemented to isolate nodes in a P2P network that provide deceptive or malicious services in order to avoid using them forged, incorrect or misleading information and services to interact with such nodes, P2P The main problems facing security.