Disclosed is an electronic device comprising: a housing; a display disposed on one surface of the housing; a cover comprising a first area on which a plurality of input objects are disposed and a second area on which a transparent panel is disposed, wherein the cover is disposed such that at least a portion of the display can be openably and closably covered, and is configured to provide at least a first arrangement state or a second arrangement state; and a processor which is electrically connected to the display, and is set to output a first screen associated with a first security function on an area of the display corresponding to the second area in the first arrangement state, and to output a second screen associated with a second security function on at least a portion of the display in the second arrangement state. Other various embodiments identified in the specification are also possible. Besides, it may be permissible to prepare other various embodiments speculated through the specification.