A method of secure communication interactions that comprise a communication via various communication modes. Example method comprises accepting an indication from a first user to communicate with a second user via a preferred communication mode, associating the indication with a unique identifier without revealing an identity of the first user, and in response to receiving a response from the second user, establishing a user-to-user communication channel for a particular communication mode selected from the preferred communication mode without requiring an identifier disclosing an identity of any user, and terminating the particular communication mode in response to determining that one user requests the termination of the particular communication mode to become a blocking user, wherein a future communication between the blocking user and any outside user is blocked based at least in part on the unique identifier.