Why is email being sent to everyone in my mailbox from someone I don't know?  I'm receiving emails regarding Jewelry.  I didn't open the attachment.  A friend told me that email was received from this same person on more than one occasion.  I didn't give my email addresses to anyone.  I have Virus and Security software.  The only thing that I've done differently was sign up for Shop AT Home and downloaded something to view/receive coupons.  The emails started after this.  I have since uninstalled shop at home, changed my email pw, reported messages as phishing and deleted the emails.  Any clue to what's going on?  thanks.