I tried to download box drive for mac from https://www.box.com/resources/downloads on Safari but got the message "This connection is not private. This website may be impersonating 'e3.boxcdn.net' to steal your personal or financial information. You should go back to the previous page". I tried on Chrome and got a similar message "Your connection is not private. Attackers might be trying to steal your information from e3.boxcdn.net (for example, passwords, messages, or credit cards). NET::ERR_CERT_AUTHORITY_INVALID"
I think this is due to an expired certificate.