Thanks for the reminder that everyone needs to be on their toes. The topic has been discussed here in the past, but it's been a while -- See the links below:
See old threads on it... from 2012:
http://www.jcna.com/forums/view.php?Vref=JCNA&Vfnum=001&Vpost=34632&Vthr...
and 2011:
http://www.jcna.com/forums/view.php?Vref=JCNA&Vfnum=130&Vpost=34162&Vthr...