REBOL [
    Title: "Prompt for User and Password"
    File:  %userprotect.r
    Date:  15-Sep-1999
    Purpose: {Prompt for username and password to use for a transfer.}
    Category: [ftp net util 1] 
]

user: ask "Username? "
pass: ask/hide "Password? "

data: read join ftp:// [user ":" pass "@ftp.site.com/file"]