My boss has gotten 4 of these in the last two days. All the email address look legit - including one from someone at one of our sister companies. They had subject lines of "read immediately" "hi" and "unknown". The body of the emails was nothing more than "stuff about you?" or "information about you" or "my hero" with a zip file attached. We work on Macs so we are imune to the viruses, though they can still be sent to us. Just thought I'd let you know what to look out for.