Been getting a lot of errors like this lately. I did some research and found that this is because html was detected in the input text. Does this mean that someone is trying to hack my website?
I can stop this from happeneing by turning off page validation, but this hardly seems like a good solution.
Here is some info from one of the errors:
HTTP_CONNECTION:keep-alive HTTP_ACCEPT:*/* HTTP_ACCEPT_ENCODING:gzip, deflate HTTP_ACCEPT_LANGUAGE:en-us HTTP_HOST:www.easymuaythai.com HTTP_REFERER:http://www.google.com/search?q=symbolic+tattoos&hl=en&client=safari&tbo=d&source=lnms&tbm=isch&ei=u5c1T8L-JfLYiAKRs5ixCg&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CAkQ_AUoAQ&biw=1024&bih=622 HTTP_USER_AGENT:Mozilla/5.0 (iPad; CPU OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3
Don’t know if it matters, but I have a rule in my IIS to prevent image hotlinking.
Thanks.
First the string you give here seems like some search on google images for two words (symbolic tattoos) and end up to your site. Maybe its false, but the words have do with your site.
99.9% this call is not attack.
Now asp.net by default take care for every input that maybe use for script injection, or render anything on page. But after your familure with this and you know what you must do you can disabled it.
What to do: You can read anything, but write them on page using HtmlEncode, or UrlEncode if you place them on URL, or Attribute Encode if you place this input on attributes. If you import them on SQL then also take care to make your sql queries with parametres.
HotLinking
The image hotlinking just check if the reference come from your site and I do not think that have to do with this error. How ever because this is an image search, maybe the one is click on this google image, the google creates a script to show this image above and this some how is throw an error… hmmm maybe have to do…
Update
I found the link that you give is here Here is what your users come and see from the above reference. From google chrome is not make any error.
This link is found on the above reference link.
http://www.google.com/search?q=symbolic+tattoos&hl=en&client=safari&tbo=d&source=lnms&tbm=isch&ei=u5c1T8L-JfLYiAKRs5ixCg&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CAkQ_AUoAQ&biw=1024&bih=622 HTTP_USER_AGENT:Mozilla/5.0 (iPad; CPU OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3