When someone is in court on charges of child abuse, maybe we don't want them to know in case they (After serving their sentence) or their friends go for reprisals. Maybe the next child abuser might know their likely avenue of getting caught. Yet still we tell them the charges and evidence and give them a chance to defend themselves. Often in my country, given the damage such allegations could cause to both the victim and alleged (but not yet proven) perpetrator, we don't even reveal the identities of culprits until there's a guilty verdict.

If we can extend that courtesy to people accused of child abuse, surely we should extend it to people accused of internet spam?