How could I identify the yahoo group mail hacker?
We maintain a yahoo group mail for our community. Moderator of the group mail is a representative of our community, so whenever we have a new representative, a new password is set by the selected or elected person (representative) and only this person knows the password of the group mail. Few months ago (after taking the charge of moderation by a new person) it was found that our group mail has been hacked and some e-mails have been modified by the hacker(s). Now we are trying to find out the identity of the group mail hacker(s).