Does the Web Client have an option to switch from HTTP to HTTPS, to stop sending the logging details in clear text?
Change Auditor does not offer an option to switch between HTTP and HTTPS, the reason being that Change Auditor relies on IIS for the Connection of the web client.
To switch to HTTPS for an IIS website please consult the following two KBs from Microsoft:
https://learn.microsoft.com/en-us/iis/manage/configuring-security/how-to-set-up-ssl-on-iis
https://learn.microsoft.com/en-us/archive/blogs/rakkimk/iis7-how-to-configure-a-website-for-https
Please check that the Web Client page has been added to the Intranet on the Internet settings once IIS has been set up to use a certificate for the Web Client webpage.