Chofetz Chaim Daily 18 Taamuz 5:2 Asur to tell people that ploni is weak/not smart etc. because this will damage him socially & financially. 5:3 See sefer for more details. 5:4 Worse to say that ploni isn’t such a scholar; e.g. if he’s a Rabbi, it will damage his spiritual influence and livelihood. If he’s a newlywed, it will embarrass him and his new family.
Reader submitted clarification regarding yesterdays segment:
The Halacha stated in 5:1 is intended to warn against needlessly engaging in character assassination however one must still take the appropriate steps of rebuke, etc with the seven conditions as will be elaborated upon in Chapter 10. This is especially important if one is found to be hurting another.