The purpose of this article is to explore the use of wireless communication technology for network connectivity in ocean liner environments, which is different from the data security system of wired networks. The key work is based on data security practices in the ocean liner environment, including building a data security classification system and developing different security strategies in data collection, storage, transmission, processing, and other aspects. In addition, machine learning methods are introduced into security warning strategies to intelligently analyze data security risks and make decisions.