Be on the lookout for a message that fraudulently claims to be from United Parcel informing you that the package that you sent contains an inoorrect address, that you must fill out an invoice, and that you would be owing money if you didn't follow instructions. If you haven't sent a package recently you would be less likely to show any concern. However, do not open the attachment, "UPSInvoice 8771.zip" even if your curiosity is getting the best of you. Actually, as a matter of routine, do not open any zip files that come from strangers. This zip file contains a virus. Delete the message immediately. For more info, go Here: http://www.snopes.com/computer/virus/ups.asp