Dans un fichier .htaccess, à la racine de ton site, rajoute les lignes suivantes :
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} .*WebsecurifyScanner* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Morfeus* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*updownerbot* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*python* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*HTTrack* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Filangy* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*BackWeb* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*BackStreet* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Bandit* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*BatchFTP* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Bullseye* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*bumblebee* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*CherryPicker* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*CherryPickrElite* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*CherryPickerSE* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*ChinaClaw* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*clipping* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*collage* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Collector* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Crescent* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*eCatch* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*EirGrabber* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*EmeraldShield* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*FlashGet* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*FlickBot* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*FrontPage* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*GetRight* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*GetSmart* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*GetWeb* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*GetWebPage* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*gigabaz* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*GornKer* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*gotit* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Grabber* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*GrabNet* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*kapere* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*larbin* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Missigua* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Vampire* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*PycURL* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*RealDownload* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Reaper* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Recorder* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*SearchExpress* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*SlySearch* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*SmartDownload* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*snagger* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Snake* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Stripper* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Sucker* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Telesoft* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebAuto* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebBandit* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebCapture* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Webclipping* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*webcollage* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebCopier* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebEMailExtrac* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebFetch* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebLeacher* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebMiner* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebMirror* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebReaper* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*WebWhacker* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*Whacker* [NC,OR]
RewriteCond %{HTTP_USER_AGENT} .*whizbang* [NC]
RewriteRule ^.* - [F,L]La liste des bots n'est pas exhaustive, mais une petite mise a jour a temps régulier devrait permettre tout de même de mettre en place une protection de base relativement efficace.
