Example: Someone holds a friend’s phone for safekeeping. Later the friend is found to have caused that person a loss. The phone must still be returned; the dispute should be addressed separately through fair and legitimate means.
Trust can concern property, assigned duties, or information received in a position of responsibility. Not every piece of information is automatically a permanent secret; the nature of the trust and the rights at stake must be understood.
In مَنْ خَانَكَ, مَنْ means “the one who,” and the ending كَ refers to “you.”