Just now checking my email for any news, I stumbled upon an email says my delivery is failed to deliver. This is a new scam trick to naturally force you guys to click on the attached file without you guys knowing what's inside. Here's an example of the email I received:
From: “U.S. Postal Service”
Subject: USPS Delivery Failure Notification
File attached: USPS report.zip (20 KB)
Unfortunately we failed to deliver the postal package you have sent on the 8th of January in time because the recipient’s address is erroneous.
Please print out the shipment label attached and collect the package at our office.
This trick usually won't work on people who familiar with this kind of trick or people who don't use that company service. The file attached contains virus that would harm your computer anyway it could, so always take extra precautions. "Better be safe than sorry" right?. Always check the email you think is suspicious and do not click on the attached file unless you are very sure what it is and that it safe. If not, just delete it.