diff -Nru casper-1.376+zorin4/debian/changelog casper-1.376.2+zorin1/debian/changelog
--- casper-1.376+zorin4/debian/changelog	2016-09-18 18:38:22.000000000 +0000
+++ casper-1.376.2+zorin1/debian/changelog	2016-11-04 15:37:46.000000000 +0000
@@ -1,3 +1,24 @@
+casper (1.376.2+zorin1) xenial; urgency=medium
+
+  * Made modifications for Zorin OS 12
+
+ -- Artyom Zorin <azorin@zoringroup.com>  Fri, 04 Nov 2016 15:37:42 +0000
+
+casper (1.376.2) xenial-proposed; urgency=medium
+
+  * Make scripts/casper-bottom/53disable_unattended_upgrades executable.
+    (LP: #1619188)
+
+ -- Brian Murray <brian@ubuntu.com>  Tue, 11 Oct 2016 09:32:27 -0700
+
+casper (1.376.1) xenial-proposed; urgency=medium
+
+  * scripts/casper-bottom/53disable_unattended_upgrades:
+    - Disable the security allowed origin as it can fill a live environment.
+      (LP: #1619188)
+
+ -- Brian Murray <brian@ubuntu.com>  Mon, 03 Oct 2016 16:36:57 -0700
+
 casper (1.376+zorin4) xenial; urgency=medium
 
   * Ready for public use in Zorin OS 12
diff -Nru casper-1.376+zorin4/scripts/casper-bottom/53disable_unattended_upgrades casper-1.376.2+zorin1/scripts/casper-bottom/53disable_unattended_upgrades
--- casper-1.376+zorin4/scripts/casper-bottom/53disable_unattended_upgrades	1970-01-01 00:00:00.000000000 +0000
+++ casper-1.376.2+zorin1/scripts/casper-bottom/53disable_unattended_upgrades	2016-10-03 23:36:53.000000000 +0000
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+PREREQ=""
+DESCRIPTION="Disabling security unattended-upgrades..."
+
+prereqs()
+{
+       echo "$PREREQ"
+}
+
+case $1 in
+# get pre-requisites
+prereqs)
+       prereqs
+       exit 0
+       ;;
+esac
+
+. /scripts/casper-functions
+
+log_begin_msg "$DESCRIPTION"
+
+# Stop downloading and installing security updates automatically
+# as they can fill up a Live CD or presistent environment. (LP: #1619188)
+SECURITY='"${distro_id}:${distro_codename}-security";'
+if grep -q "^\s\+$SECURITY$" /root/etc/apt/apt.conf.d/50unattended-upgrades; then
+    sed -i "s/\(\s\+\)$SECURITY/\/\/\1$SECURITY/" /root/etc/apt/apt.conf.d/50unattended-upgrades
+fi
+
+log_end_msg