Task Scheduler Security?

[Guest SchedTask]

Have a few Internet facing servers with half a dozen or more scheduled tasks

each which to date have been run under the context of the Local System

account. Was reading the following article;

 

http://technet2.microsoft.com/windowsserver/en/library/f60ea8d6-d2af-4dd0-b050-c09951826f5d1033.mspx?mfr=true

 

This article says that you need to be very cautious about running tasks

using the Local System account due to the "Act as part of the operating

system" permission. I read the linked article that was meant to explain this

further, but I'm still left wondering how someone might be able to use this.

Can anyone explain in layman terms what the risks of running Scheduled Tasks

using the Local System account are?