I also think you should use a Verizon hot spot. You can secure it with a password so no one else can use the hot spot. However, if the transmission between you and everyone else needs to be secure, you need to take other precautions that have nothing to do with the hot spot. You need to have software that will encrypt the traffic between you and your destination. If you working in finance, this is normally provided in the software you are using. If you are working with sensitive data on a web site, the site should use https to encrypt the data between you and the server.