An established connection between the Email Security - Server appliance and the Internet.
You are logged in to the Email Security - Server Web UI with Admin and Operator access.
To import an impersonation detection rules file:
Go to the Settings > Impersonation page.
Click Import.
Click Choose a File, and then select the local impersonation rule JSON file you want to import. You must select a file that was exported using the Web UI of a compatible appliance. By default, an exported impersonation file is called impersonation.json.