I have received an email that appeared to be from me. On closer inspection the email address was my name but some bogus account at fluiddata. The problem however was that in the CC line were a number of my contacts from address book. So although emails are not being sent from my account, somehow this spammer has harvested my address book and is sending emails that 'appear to be from me'. Any thoughts about has happened and what I should do would be appreciated. Can't work it out.