When it is permissible to ask for information about someone, the person speaking is obligated to give a truthful answer, even if the reply will contain negative information.
Lesson 2
Again, even when circumstances allow for listening to a derogatory report for a beneficial and constructive purpose, it is forbiddent to accept the information as absolute truth. Just listen enough to be suspicious and protect yourself from possible harm or loss.
------------------------------------------------------ Lashon Hora = Saying a derogatory/negative statement about someone else that is TRUE
Motzi Shaim Ra (Defamation of Character) = Saying a derogatory statement that is FALSE