Abstract Dynamic multipath routing gives users flexibility over the transmitting path to deliver messages for security. Several protocols have already presented, such as multipath TCP, random routing mutation. However, they often limited to scalability, which mainly reflects on two aspects of network resource consumption and compossibility with other main transfer protocols. In this paper, to enhance the security of data delivery in wide area networks, a novel multipath routing scheme for end‐to‐end communication is proposed. The basic idea is concurrently using two paths (a fixed path and a changing path) to deliver the data of a pair, the fixed routing path undertakes the main delivery tasks, and the continually changing routing path only...