Security of a wire transfer

[Aventura]

As I am in deals to sell my watch and there are many people in the Forum that sell watches is the reason I ask you this question. In one of the today’s posts I read that a person was cheated with a wire transfer. I do not think that's possible, that's why my question? I am sure that when the wire enters your bank account no one but you can get the money. I do not get it. Thanks for clarification.
Have an Happy New Year