My file /etc/group has changed.
There is a new entry in it
plocate:x:970:
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.