To prevent others with a nasty intent from accessing your WP-Admin page on your WordPress site use the following code on your wp-admin/.htaccess file using the static IP address from approved computers.
In the vase below I am only allowing access from my desktop and laptop
AuthUserFile /dev/null AuthGroupFile /dev/null AuthName "WP Access Control" AuthType Basic <LIMIT GET> order allow, deny deny from all # George Ross MacPro allow from xx.xx.xx.xx # George Ross MacBookPro allow from xx.xx.xx.xx </LIMIT> If you need to access your WordPress site from other computer simple add another 'allow from xx.xx.xx.xx' line.