A smart meter hack is the unauthorized access of such a device or its data transmissions for the purpose of obtaining or altering communications between it and the responsible utility.
Thing hacking is an attack that exploits a vulnerability in a connected non-computing device – a Thing, in the Internet of Things -- to gain control of the device or access to a network it connects to.
A thingbot is something with an embedded system and an Internet connection that has been coopted by a hacker as a part of a botnet. A thing, in this context, could be just about anything but a computing device.
Universal authentication is a network identity-verification method that allows users to move from site to site securely without having to enter identifying information multiple times.