In modern usage, a "Trojan Horse" has come to mean any trick or stratagem that causes a target to invite a foe into a securely protected bastion or place, allowing them to pillage and conquer that target.
Can't think of a better contemporary example than that depicted in the SacBee (notoriously Left Sacramento fishwrap) today. While it is authored by one of its own Loony-Tuners, it explains how the city counsel voted (7-1) for an AZ boycott while not a single member of the counsel is Latino.
Make no mistake. We are being invaded from within.
Read all about here...
http://www.sacbee.com/2010/06/23/284172 ... _Container