New line in /etc/group

My file /etc/group has changed.
There is a new entry in it


What kind of group is this? Maybe I was hacked? Or did this entry appear when installing some program? Which program creates this record?

Welcome to ask.fedora @nkly

In such cases first thing you can do is to search for a program with dnf:

sudo dnf info plocate

Description  : plocate is a locate(1) based on posting lists, giving much faster*
             : searches on a much smaller index. It is a drop-in replacement for*
             : mlocate in nearly all aspects, and is fast on SSDs and non-SSDs alike.*

It looks like that the program has a own user so that it is possible to index the whole system.

Thank you very much.