Hi all! My parents have an old white MacBook (from '08 I think) and they have verizon email. Their email got bombarded with "message not delivered" notifications the other day and verizon locked their email for 24 hours with a message saying there were 500 messages sent in under an hour and to update their virus software. I figured it was their email that got hacked and not a virus on the Mac so I changed their password but that hasn't helped. They received 20 more "message not delivered" messages at 1:30 this morning. I don't have virus protection on my MacBook and I've never had a problem before so I am not sure what to do for them. They use the MacBook mainly for email and online shopping at major stores like macys.com and such. Any help or suggestions would be appreciated! Thanks!