diff --git a/etc/kernel/postinst.d/30_remove-system-map b/etc/kernel/postinst.d/30_remove-system-map
index fc4a604..ffffa39 100755
--- a/etc/kernel/postinst.d/30_remove-system-map
+++ b/etc/kernel/postinst.d/30_remove-system-map
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+## Copyright (C) 2019 - 2020 ENCRYPTED SUPPORT LP <adrelanos@riseup.net>
+## See the file COPYING for copying conditions.
+
 if test -x /usr/lib/security-misc/remove-system.map ; then
    /usr/lib/security-misc/remove-system.map
 fi
diff --git a/etc/security/limits.d/30_security-misc.conf b/etc/security/limits.d/30_security-misc.conf
index ea7c414..d074d94 100644
--- a/etc/security/limits.d/30_security-misc.conf
+++ b/etc/security/limits.d/30_security-misc.conf
@@ -1,2 +1,5 @@
-# Disable coredumps.
+## Copyright (C) 2019 - 2020 ENCRYPTED SUPPORT LP <adrelanos@riseup.net>
+## See the file COPYING for copying conditions.
+
+## Disable coredumps.
 * hard core 0
diff --git a/etc/skel/.config/xfce4/xfconf/xfce-perchannel-xml/thunar.xml b/etc/skel/.config/xfce4/xfconf/xfce-perchannel-xml/thunar.xml
index 06b5b64..09db5fb 100644
--- a/etc/skel/.config/xfce4/xfconf/xfce-perchannel-xml/thunar.xml
+++ b/etc/skel/.config/xfce4/xfconf/xfce-perchannel-xml/thunar.xml
@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
+<!-- ## Copyright (C) 2019 - 2020 ENCRYPTED SUPPORT LP <adrelanos@riseup.net> -->
+<!-- ## See the file COPYING for copying conditions. -->
+
 <!-- Configuration for Thunar. -->
 <!-- Changes date style to iso format. -->
 <!-- Disable thumbnails. -->
diff --git a/etc/thunderbird/pref/40_security-mic.js b/etc/thunderbird/pref/40_security-mic.js
index fe36be2..91a8023 100644
--- a/etc/thunderbird/pref/40_security-mic.js
+++ b/etc/thunderbird/pref/40_security-mic.js
@@ -1,3 +1,6 @@
+//#### Copyright (C) 2019 - 2020 ENCRYPTED SUPPORT LP <adrelanos@riseup.net>
+//#### See the file COPYING for copying conditions.
+
 //#### meta start
 //#### project Whonix and Kicksecure
 //#### category security and apps
diff --git a/usr/lib/security-misc/pam-abort-on-locked-password b/usr/lib/security-misc/pam-abort-on-locked-password
index 71b432c..8ea4cc5 100755
--- a/usr/lib/security-misc/pam-abort-on-locked-password
+++ b/usr/lib/security-misc/pam-abort-on-locked-password
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+## Copyright (C) 2019 - 2020 ENCRYPTED SUPPORT LP <adrelanos@riseup.net>
+## See the file COPYING for copying conditions.
+
 if ! passwd_output="$(passwd -S "$PAM_USER" 2>/dev/null)" ; then
    echo "$0: ERROR: user \"$PAM_USER\" does not exist." >&2
    exit 1