One of my friend came to me and told me he lost his admin user while he was browsing the web site. I was surprised because normally it does not happen. if that site was using asp.net :) its sad but true asp.net does not allow html inclusion in post data. anyway the hacker puts a script code into his name field like this:
its not a big deal if you look the output of this script you will see this:
at the end it stoles browser's cookie and send it to a php file. while the hacker browsing another url and see which fish got fall for a trick :) anyway today I made a research and found a solution to this situation:
you should simply disable all js inclusions in the page except the domain. that will make your browser more secure.