Index: chrony-4.1/examples/chrony-wait.service
===================================================================
--- chrony-4.1.orig/examples/chrony-wait.service
+++ chrony-4.1/examples/chrony-wait.service
@@ -7,6 +7,19 @@ Before=time-sync.target
 Wants=time-sync.target
 
 [Service]
+# added automatically, for details please see
+# https://en.opensuse.org/openSUSE:Security_Features#Systemd_hardening_effort
+ProtectSystem=full
+ProtectHome=true
+PrivateDevices=true
+ProtectHostname=true
+ProtectClock=true
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectKernelLogs=true
+ProtectControlGroups=true
+RestrictRealtime=true
+# end of automatic additions 
 Type=oneshot
 # Wait for chronyd to update the clock and the remaining
 # correction to be less than 0.1 seconds