Hi,
I just want to warn Trac users that "invisible" spams links are being
inserted by spammers in many Trac Wikis
usually the links are put at the top (or bottom) of the page with a
special style that renders the links invisible when looked in html
mode
usually the links are put in the form :
--%<-----%<-----%<-----%<-----%<-----%<-----%<-----%<-----%<-----
%<-----%<---
{{{
#!html
<div style="position:absolute;left:-400000px;height:1px;">
<a href="http://spammer.tld/v1agra.html";><b>cheap v1agra</b></a>
</div>
}}}
--%<-----%<-----%<-----%<-----%<-----%<-----%<-----%<-----%<-----
%<-----%<---
to check for a sample of this kind of inserting :
http://www.google.com/search?q=style%3D%22position:absolute%3Bleft:-400000px%3Bheight:1px%3B%22&client=iceweasel-a&rls=org.debian:fr:unofficial&start=0&sa=N
(needless to say that there could be other ways to hide the links and
this search is not exhaustive)
it would be very interesting to have some kind of warning/blocking of
such annoying technique built-in in the Trac wiki
here are the different ways to check if one page has such spam links :
- look at the source code
- disable style sheet (in Firefox : View -> Page Style -> no style)
- download the page in plain text
- look at the history (sometimes the editor has created an account or
uses guest)
cheers
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