Joe writes: "My father uses services such as T-Mobile Hotspot and hotel Internet connections — unencrypted and insecure — quite a bit. In his line of work, he sends and receives emails with confidential content ranging from legal documents to credit card numbers. Since this has the potential to create serious problems, I have decided to try to convince him to use a VPN. However, anything he has to configure or do any significant amount of work to use — basically, anything he runs the server for — is out of the question. I know there are a significant number of third-party VPN services for this specific purpose, so can you recommend any?"