Data security tamper-proofing method and system based on big data and cloud platform

The invention provides a data security tamper-proofing method and system based on big data and a cloud platform, and relates to the technical field of big data. In the invention, for each first data access terminal device, the first data access terminal device and each other data access terminal device except the first data access terminal device are subjected to device correlation coefficient determination processing to generate the device correlation coefficient. For each first data access terminal device, matching at least one second data access terminal device corresponding to the first data access terminal device from other data access terminal devices through the device correlation coefficient, and performing data security verification processing on the data access of the first data access terminal equipment through the at least one second data access terminal equipment. Based on the method, the problem of low reliability of data security verification in the prior art can be improved. 本发明提供的一种基于大数据的数据安全