Despite the "unidentified" warning, this is a known behavior where macOS security settings occasionally fail to display the developer's verified name for certain background helpers.
If you want to stop the process or resolve errors related to it, you have several options depending on your goal. standaloneupdaterdaemon
Appearing in the Login Items or Background Tasks section, sometimes flagged as coming from an "Unidentified Developer". Despite the "unidentified" warning, this is a known