[Hidden-tech] my mail's been hijacked!

[Juliet Jacobson]

Has anyone out there ever had their mail client taken over? I woke up 
this morning to over 300 "mail undelivered" messages for email that I 
never sent. It seems my email address has been taken over by spammers? 
or maybe some virus or spyware has installed itself on my computer and 
is busily sending mail as if it's me? I use a mac G4 (not an intel mac) 
running system 10.3.9. Any useful info for me? Thanks!