Network books, a synthetic word that rose in China in the 20th century, was put forward by Wang Zesheng, a scholar. The library is a foreign language, which was introduced to China from Japan at the end of 19. Network book resources are shared by * * *. When books of different sizes are downloaded and different network servers are densely distributed, the security problem of online books becomes increasingly prominent, that is, the download speed is often linked to virus Trojans, and hackers break the tranquility of the online book world, which fully illustrates the virtuality and double-edged sword characteristics of online books.