A threatening message was sent from a web-based e-mail service. Information in the header indicates that the sender connected to the webbased e-mail server through a proxy to conceal his/her actual IP address. Describe how you would determine the senders actual IP address? As you think about this scenario, consider the possibility that you cannot gain access to information on the proxy server itself. Hint: Send an e-mail that contains a web bug that will provide information about the computer used to read the message.