An electronic device has a network interface configured to obtain a first application package for installing an application, the first application package having a flag, a normal application and a plurality of trusted applications (TAs), the flag indicating whether the first application package has a trusted application (TA), and a processor configured to identify whether the first application package has a first TA installable in the electronic device based on the flag included in the first application package and to install the first TA in the electronic device when the first application package has the first TA. The processor is further configured to identify whether the first application package has a second TA installable in another electronic device and control the network interface to transmit the second TA to the other electronic device when the first application package has the second TA installable in the other electronic device.