Index: at-3.2.2/atd.service.in
===================================================================
--- at-3.2.2.orig/atd.service.in
+++ at-3.2.2/atd.service.in
@@ -4,6 +4,19 @@ Documentation=man:atd(8)
 After=remote-fs.target nss-user-lookup.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 
 ExecStartPre=-find @atjobdir@ -type f -name "=*" -not -newercc /run/systemd -delete
 ExecStart=@sbindir@/atd -f
 IgnoreSIGPIPE=false