I am using a custom Optin form , Coded in html, It has a connected mailing script which emails me the submitted optin data, With the help of this great community , I was able to save the optin data on the server too , In separate .txt and .cvs files BUT when I checked it now , it is available to general public as well and the search engines too. So , I want to make it PASSWORD PROTECTED or Appear EMPTY/UN ACCESSIBLE for normal users .
I had already blocked search engines with robots.txt.
This is the url of the leads page http://timesharesgroup.com/sell/index.html *******************UPDATE***********************
THIS IS NOT A DUPLICATE , THE CLOSEST ANSWER I GOT WAS lock text files with passwords [closed]
I am not looking to make it downloadable , I just want it to be secured from other people so The leads data can be kept to me only and can not be misused.