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What is hotlinking and how do you prevent it?
To stop another website displaying images that you host on our servers, you can add this couple of lines to the .htaccess file at the root of your site:
# Hotlink control
SetEnvIfNoCase Referer "^http://(.+\.)?monsite\.com/" [NC]
SetEnvIfNoCase Referer "^$" local_referal
Deny From All
Allow from env=local_referal
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