Spamfighter protection on redirects
I’ve found a number of spam pages on Plone installations that include protection against spamfighters and other irate people.
Simply put, if you access the documents uploaded by the spammers directly, or not from a search engine link, you’re treated to a message that insists the page doesn’t exist.
It’s fake. Done by javascript.
There are still a lot of susceptible installations there. Go visit the Plone community NOW for an update, and block search engine spiders from your Member uploads directory by using robots.txt, now!
Other people discuss this: