a display;

a communication interface comprising communication circuitry;

a memory; and a processor, wherein the processor is configured to:

based on acquiring a command for executing an application stored in the memory, execute the application, based on acquiring a request for access for information stored in the memory through the communication interface while executing the application, acquire access control information of another electronic apparatus related to the electronic apparatus for the application and a relevance between a user of the electronic apparatus and a user of the another electronic apparatus, wherein the access control information comprises: at least one of whether the another electronic apparatus approved the request for access of the application or an approval range, identify a coefficient corresponding to the access control information and a weight corresponding to the relevance, multiply the coefficient and the weight and calculate an access approval score, acquire guide information for guiding a response to the request for access based on the access control information, the access approval score and the relevance, and control the display to display a message including the guide information.