If you receive an email with the following subject? and it has an .html attachment
there is a good chance that it is a virus, the attachment is a very good copy of a DHL notification
tempting you into clicking a link which installs some nasty stuff.
Subject: UPS Delivery Notification, Tracking Number AQ4QALSP4NJ3X7J50Y
Sending address: firstname.lastname@example.org
Display Name: UPS Quantum View