How to prevent image hotlink from your ASP.NET site?

Question

What is the best/simplest way to prevent people hotlinking to images from my hosted ASP.NET website? I don\'t need to prevent all images/resources from hotlinking, I just want t

Answer 1

One thing I've seen that I thought was clever is to add an extra portion to the bottom of the image, and then use a css sprite technique to cut it off when shown on your site. A naive hotlink will result in displaying your extra portion. This will mean the image is skewed, so it doesn't look right on the other site, and you can use the extra portion to show your own url or whatever else you want.