Fecha de publicación: 27/10/2020 Fuente: Wipo "BigData" The invention relates to the technical field of data safety processing, and relates to a big data safety protection method and system. In this method, firstly, text feature information and code writing logic in a target script file are extracted; secondly, obtaining a to-be-analyzed source code of the target script file through the screened target information field, then constructing a code sequence of the to-be-analyzed source code, and querying to obtain a target code sequence so as to determine whether the target script file is a first script file or a second script file; and finally, basedon the category of the target script file, selecting different recognition methods to identify whether the target script file is a data crawler. According to the invention, the source code and the writing logic of the script file are analyzed; according to the method, whether the script file is the data crawler or not can be judged from the source code level according to the result obtained through analysis and recognition, so that the data crawler can be quickly and accurately recognized, the data crawler is intercepted or destroyed, and the safety and privacy of data interaction between devices are ensured.