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Just a quick reminder that websites should check for XSS holes on their site, especially freeform text input such as search boxes. Even big sites can have these issues with XSS and escaping user input.
If you’ve noticed that your rankings in Google seem to be affected, you might consider a few searches on your site to see if anyone has injected spammy or porn content on your site. If your domain was example.com, you might want to run a few queries such as [site:example.com porn] or [site:example.com phentermine] or [site:example.com viagra] to see whether you run across unexpected results.
The Google security blog has written about XSS holes and exploits before and how to protect yourself. We’ve also written about protecting your site and cleaning up a hacked site before.
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