Folder Permissions:

• Execute -> Actually enter that folder but not be able to read it's contents, see what files are located there.

• Read -> Be Able To Read Folder Contents

• Write -> Edit folders data. delete or create new files/folders inside it and etc

File Permissions:

• Execute -> if it's script like index.php run it to get data from it

• Read -> if it's text file like index.html or index.php be able to read it

• Write -> ability to change its data

As for security, this permissions are only an issue wh...