In general there are many form of hacking attempt in real world but with little practice we can lowering that risk.
Protect your configuration files :
chmod 444
just reminder :
4 = read
2 = write
1 = execute
First 4 for owner
Second 4 for group
third 4 for others (beside owner dan group)
Make sure you chmod 444 to :
- wp-config.php
- index.php
- wp-setting.php
- Theme directory
How to do this chmod?
1. Using your FTP client ( I use coreftp ) :
Right click on file or folder you want to change mode (chmod).
Click ‘Properties‘

Delete 644, change it into 444, click OK to apply.