Security remains a hot topic

Today I saw a new way of tricking people into opening an email attachment. An email from American Airlines (supposedly) confirming a flight that I (supposedly) had booked in the US was sent to me. Strange thing only that I did not book that flight at all. Obviously someone tried to trick me into opening a zip file attachment.

It is the Ticket_AA.exe that would be the problem if I had opened it. I wonder how many people got this email and what the percentage of people is that actually opens the attachment.