Abstract: Systems and Methods for providing access control to files stored on a shared file storage platform in a multi-user environment are described herein. According to the present subject matter, the system(s) implement the described methods for receiving a request from a user device of a user from amongst a plurality of users, to perform an operation in relation to a file. Further determining a global unique identifier (GUID) associated with the file where the GUID uniquely distinguishes the file from other files based on contents of the file. The method further includes executing the requested operation in relation to the file based on an access reference graph (ARG), where the ARG provides an access control data structure to the files stored on the shared file storage platform, and where the ARG references the files stored on a shared file storage platform based on the GUID associated with each file.