png

Last week when i went to the ranking system, i had a popup with logon for enigma come from a image.png. I try to google how to inject code in a png but can't find :( Can you give me a link or tell me how i can do ? thx

Did anyone now if that's still work with a jpg or gif. I made a .swf cookiestealler and that work on a lot of forum but with a jpg or gif I think i do something wrong because eveytime i have :

The image can't be display because ….error.