Remove a paragraph about over building security, it's a bit off.

Discussed with:	des, FreeBSD-security

en_US.ISO8859-1/books/handbook/security/chapter.sgml

@@ -127,20 +127,6 @@
       today's desktops, and as computers become networked and
       internetwork, security becomes an even bigger issue.</para>
 
-    <para>Security is best implemented through a layered
-      <quote>onion</quote> approach.  In a nutshell, what you want to do is
-      to create as many layers of security as are convenient and then
-      carefully monitor the system for intrusions.  You do not want to
-      overbuild your security or you will interfere with the detection
-      side, and detection is one of the single most important aspects of
-      any security mechanism.  For example, it makes little sense to set
-      the <literal>schg</literal> flag (see &man.chflags.1;) on every
-      system binary because
-      while this may temporarily protect the binaries, it prevents an
-      attacker who has broken in from making an easily detectable change
-      that may result in your security mechanisms not detecting the attacker
-      at all.</para>
-
     <para>System security also pertains to dealing with various forms of
       attack, including attacks that attempt to crash, or otherwise make a
       system unusable, but do not attempt to compromise the