Remove reference to a conference presentation from 2007

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1933421 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/env.xml b/docs/manual/env.xml
index e8218b23d368cc204d408bea78aaabc7cc6406c2..6eeaef42ee77c0ccccb6baa2cdbfc73e5828c70e 100644 (file)
--- a/docs/manual/env.xml
+++ b/docs/manual/env.xml
@@ -513,9 +513,7 @@
       headers are converted to environment variables in <module>mod_cgi
       </module> and other modules:  Previously any invalid characters
       in header names were simply translated to underscores.  This allowed
-      for some potential cross-site-scripting attacks via header injection
-      (see <a href="http://events.ccc.de/congress/2007/Fahrplan/events/2212.en.html">
-      Unusual Web Bugs</a>, slide 19/20).</p>
+      for some potential cross-site-scripting attacks via header injection.</p>
 
       <p>If you have to support a client which sends broken headers and
       which can't be fixed, a simple workaround involving <module>mod_setenvif