Mailing Malware. You just can’t make this up: but the oldest cyber threat tactic is back again. A cybercrime group has been mailing out USB thumb drives in the hope that recipients will plug them into their PCs and install ransomware on their networks, according to the FBI. The USB drives contain so-called 'BadUSB' attacks. They were sent in the mail through the US Postal Service and United Parcel Service. One type contained a message impersonating the US Department of Health and Human Ser