Trojan horse is a type of deception used by humans for taking over the enemy's base. In general humans are very suspicious. They often expect strangers to behave negatively and to harm them. So it is a common practice that humans treat each other extremely nicely, give presents (especially in Asia), offer help, and do everything to win trust. Extremes of this behavior are often suspicious. People and groups of people, such as countries, develop trust over time by observing the behaviors of each other and analyzing the inner motives of each other. Stalin and many other tyrants tested his close circle for loyalty by offending them and pressing them to do things against their will. Only after tested people repeatedly demonstrated personal integrity and loyalty to Stalin, he allowed them to stay near him. This is how Stalin, hated by many people and responsible for the deaths of millions survived as a leader to an old age.
A Trojan horse is a seeming act of a good will, a valuable present, a valuable offering which one of the members of a party gives to another. If an offering is accepted, the giving party is allowed to enter, infiltrate, get through security and then take over the base of a receiving party. From a human prospective, the hybridization program of the Greys is potentially a Trojan horse. The Greys offered the MIC some gifts, presumably propulsion technologies, and in exchange infiltrated the earth with their genes and therefore hybrids which are their potential agents. This is how the hybridization program may be interpreted as a Trojan horse.
Any of your offerings would be considered potential Trojan horses as well. It will take humanity time to investigate your agenda based not on your words but on the opinion of independent experts. The best experts would be truly independent, potentially your enemies. As humans gain knowledge of your true good intentions, the trust will be built and many doors will be open (figuratively speaking). Creation of an off-world human colony would greatly facilitate the process of building trust. Since the humans in the colony would be exposed much to the aliens, they will have many ways to interview different aliens from different cultures and to build relationships of trust. Then these witnesses will be much more trusted by humans than aliens. Since we can judge humans personalities well based on a person's history, culture, speech, facial expressions, body movements, and behavior under pressure, we trust humans much more than aliens, about which we know very little. The appearance of an alien tells us very little and we are not equipped to tell if they are truthful. In the human world trust is built by continuous interaction over years.
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Chapter 6.
MIC = military-industrial complex