I would be concerned that the hacker might harvest the addys from the senders and start "spamming" them. If you can let your friends know so they can be alerted?...some alarming spams are when they pretend to be a friend needing emergency money somewhere. I hope there was no personal info in the mails that were hacked. Have you noticed anything else odd about your computer--did you have financial info stored with passwords ?? It might be a good idea to change those important passwords anyway, just in case. The ones for QB, etc, I would not worry about.