diff --git a/munin-cgi-graph.service b/munin-cgi-graph.service
index 962f17c..0b6c41a 100644
--- a/munin-cgi-graph.service
+++ b/munin-cgi-graph.service
@@ -3,6 +3,19 @@ Description=Munin CGI Graph generator
 Requires=network.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=forking
 ExecStart=/usr/bin/spawn-fcgi -s /var/run/munin/munin-cgi-graph.sock -P /var/run/munin/munin-cgi-graph.pid -u munin -g munin -M 0770 -U munin -G www /srv/www/cgi-bin/munin-cgi-graph
 PIDFile=/var/run/munin/munin-cgi-graph.pid 
diff --git a/munin-cgi-html.service b/munin-cgi-html.service
index 359455f..acc15da 100644
--- a/munin-cgi-html.service
+++ b/munin-cgi-html.service
@@ -3,6 +3,19 @@ Description=Munin CGI HTML generator
 Requires=network.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=forking
 ExecStart=/usr/bin/spawn-fcgi -s /var/run/munin/munin-cgi-html.sock -P /var/run/munin/munin-cgi-html.pid -u munin -g munin -M 0770 -U munin -G www /srv/www/cgi-bin/munin-cgi-html
 PIDFile=/var/run/munin/munin-cgi-html.pid 
diff --git a/munin-cron.service b/munin-cron.service
index ee19547..bce0bd6 100644
--- a/munin-cron.service
+++ b/munin-cron.service
@@ -3,6 +3,19 @@ Description=Collect node data
 Documentation=man:munin-cron(8)
 
 [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
 User=munin
 ExecStart=/usr/bin/munin-cron
diff --git a/munin-node.service b/munin-node.service
index ed49b44..1a0c33a 100644
--- a/munin-node.service
+++ b/munin-node.service
@@ -3,6 +3,19 @@ Description=Munin Node
 Requires=network.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=forking
 ExecStart=/usr/sbin/munin-node
 ExecStartPre=/usr/bin/mkdir -p /var/run/munin/
diff --git a/munin.changes b/munin.changes
index 29e3b24..ef60d65 100644
--- a/munin.changes
+++ b/munin.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Thu Oct  7 10:26:31 UTC 2021 - Johannes Segitz <jsegitz@suse.com>
+
+- Added hardening to systemd service(s) (bsc#1181400). Modified:
+  * munin-cgi-graph.service
+  * munin-cgi-html.service
+  * munin-cron.service
+  * munin-node.service
+
 -------------------------------------------------------------------
 Fri Mar  5 09:49:51 UTC 2021 - Thorsten Kukuk <kukuk@suse.com>