I am very clueless about sharing folders....
Here is the question, There is a back up hard drive and since the location has a free wifi, you can easily access the back up folder. I opened the myComputer and right clicked/properties on the backup driver. I see the security and shared shows: everyone and users and admin. For admin all checked box are marked and for users and everyone all but full is checked.
Common sense tells me to uncheck all for everyone and users, but need a professional opinion and instruction.