shifenzheng.bak refers to a prominent 2013 data leak involving the personal information of approximately 20 million Chinese hotel guests. The filename literally translates to "ID card backup" (身份证 - shēnfènzhèng
In the vast majority of documented cases, shifenzheng.bak is . It is a plain-text or lightly structured binary file (like a SQLite database) that can be opened with any text editor or database browser. Inside, one can find: shifenzheng.bak
Check the file type first:
If you want me to parse the file, please replace real names and IDs with fake ones before pasting, like this: shifenzheng