If you have a smartphone and have a data plan just use that. You can either tether with a wire from the phone to the computer or turn most smartphones into a wifi hot spot. I use both. Right now I have my phone connected to my computer. I have an android phone. iPhones can do a hot spot too.
I am sure it is OK as posted on this thread, but whenever I go to a sensitive web site like bank or brokerage I use my cell phone instead of wifi. I also look up at the address bar to make sure there is an s there and not just http.