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It’s possible for visitors to see a list of your site’s directories in the front-end if they enter in your domain and then a directory into their browser’s address bar. Since WordPress has a set file structure, nothing’s currently stopping someone from visiting your-site.com/wp-content-uploads/ and seeing a list of your folder and files.
This is definitely not what you want because it’s that much easier for a hacker to hack into an important file in your site if they can literally see the target file in plain sight and don’t have to guess where the file is located.
Adding this line to your .htaccess file prevents directory browsing so hackers have a more difficult time figuring you out.
Options All -Indexes
