diff -purN a/scripts/systemd/nut-monitor.service.in b/scripts/systemd/nut-monitor.service.in
--- a/scripts/systemd/nut-monitor.service.in	2023-10-07 16:06:44.000000000 +0200
+++ b/scripts/systemd/nut-monitor.service.in	2023-11-03 19:48:16.280004811 +0100
@@ -25,6 +25,17 @@ Wants=nut-server.service
 PartOf=nut.target
 
 [Service]
+# added automatically, for details please see
+# https://en.opensuse.org/openSUSE:Security_Features#Systemd_hardening_effort
+ProtectSystem=full
+ProtectHome=true
+ProtectHostname=true
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectKernelLogs=true
+ProtectControlGroups=true
+RestrictRealtime=true
+# end of automatic additions 
 EnvironmentFile=-@CONFPATH@/nut.conf
 SyslogIdentifier=%N
 ExecStartPre=-@SYSTEMD_TMPFILES_PROGRAM@ --create @systemdtmpfilesdir@/nut-common-tmpfiles.conf