How can work be organized and backbiting avoided when inquiring about the actions of others and following up on public issues such as the case of Suzanne Tamim, and how can one offer advice and warning about a person without mentioning their faults?

Backbiting is legally forbidden and considered among the major sins. However, it becomes permissible if it involves a legitimate interest that is obligatory or permissible to obtain, such as advising and warning against someone who harms others. This includes the permissibility of mentioning a person's shortcomings to someone who is seeking advice about them, or to warn people about someone whose harm is feared.

As for reviling the dead, the general rule is prohibition due to the harm it causes to the living. However, if the deceased was a disbeliever, or openly displayed wickedness or innovation, then it is permissible to speak ill of them with the intention of warning against their ways and from following their traces. This should be done only to the extent of the need and without excess, as the default rule for backbiting is prohibition.