diff --git a/lib/post_install_tasks/keep_system_updated.md b/lib/post_install_tasks/keep_system_updated.md
index f387546..952717b 100644
--- a/lib/post_install_tasks/keep_system_updated.md
+++ b/lib/post_install_tasks/keep_system_updated.md
@@ -4,7 +4,7 @@
#### :information_source: Introduction
-Software updates offer plenty of benefits. It’s all about revisions. These might include repairing security holes that have been discovered and fixing or removing computer bugs.
+Software updates offer plenty of benefits. It’s all about revisions. These might include repairing security holes that have been discovered and fixing or removing bugs.
Some benefits:
@@ -14,7 +14,7 @@ Some benefits:
#### :eight_pointed_black_star: Make sure that the system is up to date
-For CentOS:
+###### RedHat/CentOS
```bash
# Check for updates
@@ -22,13 +22,24 @@ yum check-update
# Install updates
yum update
+
+# Install upgrades (with security updates)
+yum --security upgrade
```
-For Debian:
+###### Policy
+
+| Type | Severity | Reference | Comment |
+| :--- | :--- | :--- | :--- |
+| OpenSCAP | High | [Ensure Software Patches Installed](https://static.open-scap.org/ssg-guides/ssg-centos7-guide-pci-dss.html#xccdf_org.ssgproject.content_rule_security_patches_up_to_date) | |
+| STIG | Medium | [Vendor packaged system security patches and updates must be installed and up to date.](https://www.stigviewer.com/stig/red_hat_enterprise_linux_7/2017-12-14/finding/V-71999) | ID: V-71999 |
+| CIS | | | ID: 1.2, 1.8 |
+
+###### Debian
```bash
# Check for updates
-apt-get update -qq ; apt-get upgrade -duyq
+apt-get update && apt-get upgrade
# Install updates
apt-get upgrade && apt-get dist-upgrade
@@ -36,19 +47,34 @@ apt-get upgrade && apt-get dist-upgrade
#### :eight_pointed_black_star: Automatic security updates
-###### Useful resources
+###### RedHat/CentOS
+
+```bash
+yum install yum-cron
+
+# Edit /etc/yum/yum-cron.conf
+update_cmd = security
+apply_updates = yes
+
+# Enable service
+systemctl enable yum-cron
+systemctl start yum-cron
+```
+
+###### Debian
+
+```bash
+apt-get install unattended-upgrades apt-listchanges
+
+# Edit /etc/apt/apt.conf.d/20auto-upgrades
+APT::Periodic::Update-Package-Lists "1";
+APT::Periodic::Unattended-Upgrade "1";
+```
+
+#### :eight_spoked_asterisk: Useful resources
- [How Often Should I Update our Linux Server?](https://serverfault.com/questions/9490/how-often-should-i-update-our-linux-server)
-###### Policies
-
-| Policy | ID/Description | Severity |
-| :--- | :--- | :--- |
-| STIG | [V-71999](https://www.stigviewer.com/stig/red_hat_enterprise_linux_7/2017-12-14/finding/V-71999) | Medium |
-| CIS | 1.2, 1.8 | |
-| OpenSCAP | CCI-002605, CCI-002607 | CAT II |
-
-
#### :ballot_box_with_check: Summary checklist
| Item | True | False |