From zdnet.com
he next major version of the Windows 10 operating system will include a new security feature that can detect and block the installation of known PUAs (potentially unwanted applications), Microsoft announced on Tuesday.
The term PUA, also known as PUP (potentially unwanted program), is one of the lesser-known terms in the cyber-security jargon.
It refers to software that has been installed on a computer by tricking the user — hence the term of “potentially unwanted.” This includes tactics like bundling an unwanted app with the installer of a legitimate program, or by using silent installs to bypassing user consent altogether.