The present invention relates to a method for improving communication confidentiality including the following steps: storing (101) in a data repository data about authorized and non-authorized confidential subjects for users of a telecommunication network, receiving (103) a request with identity information of a first and a second users from a user telecommunication device 3 of said first user, determining (104) the identities of said first and second users, comparing (105) data about authorized and non-authorized confidential subjects for said first and second users in said data repository, selecting (106) a first type of data about confidential subjects authorized to both users, selecting (107) a second type of data about confidential subjects authorized to said first user and non-authorized to said second user, sending (109) selected data about confidential subjects of said first and second type to said first user telecommunication device 3.