I have received about 10 e-mail's over the last week that had attachments, but I didn't recognize the sender. I immediately deleted them.
Half of them purported to be from my ISP, telling me that the other half were viruses and that I shouldn't open them. These included a link with my ISP's name included in them. Again I became suspicious as they didn't show up until about 2 minutes after the original e-mails. I tried to access the address in the link from another web page and would get an error. Then I called my ISP, they said they were bogus and were viruses as well.
I ran my "free" Anti virus program called AVG, but it failed to flag these e-mails. This was done after updating the anti virus files. I guess it's time to pay for one. Any recommendations?