Add a robots.txt file to discourage crawling:
Learn how to customize the of an allowed index page. Share public link Index of
Hackers don't manually browse "Index of" pages. They use bots that constantly scan IP ranges for intitle:"index of" . Once a bot finds a directory, it indexes every file and sends the data back to a central server. Add a robots
Massive repositories of public domain books, software, or historical archives. or historical archives.