File extension nup

Name: Miscellaneous Files

Popularity: 4

Open With: ESET Smart Security 5

What is this nup file?

Update file used for updating ESET Smart Security, a personal firewall, antispam, antivirus, and antispyware program; contains the update name, software version and build, category, date, file size, and the update module data. NOTE: NUP files are also used by other ESET products, including Cybersecurity for Mac.