A method for binding a user account operable on an air-gapped computer to an appropriate virtual machine (VM), comprising: monitoring a plurality of VMs to determine an associated user account for each of the plurality of VMs, wherein the plurality of VMs are executed over the air-gapped computer, and wherein each of the plurality of VMs is a distinct security zone in the air-gapped computer; determining a current VM from the plurality of VMs to bind an associated user account thereto; and displaying user specific indications on desktop items associated with each user account.