From: Nils Rennebarth (nils@hertha.exp-math.uni-essen.de)
Date: 04/01/93 

From: nils@hertha.exp-math.uni-essen.de (Nils Rennebarth)
Subject: Re: xlock is useless!
Date: Thu, 01 Apr 1993 14:48:39 GMT

The solution is simple:

 Start X in the background, then logout. If on every console there is
 the login prompt, one has to know your or roots password to login and
 kill the X server.

 This means, there is currently no protection against root ;-)