Amincin bayanan sirri na masu amfani shine, ba shakka, ɗaya daga cikin fifikon kowane mai haɓaka software. Kuma Microsoft, a matsayin ɗaya daga cikin shugabannin masana'antu, yana ba da kayan aikin kariya.
Don haka, bari mu ga ainihin yadda zaku iya kare bayanan littafin aikin ku ta Excel ta saita kalmar sirri.