Passwords wouldnt be the main concern as your passwords should be a user input variable,but private information such as the site the bot goes to the actions it makes,should be saved as variables,in one or separate text files,variable #navigate (read file parameter "insert URL here") or if you are able to use regex,you could save all the information in one text file sent to your customer as all the guys said above, if you are selling a bot it is essential to deliver the bot and a folder with variable text files