diff --git a/CHANGES.md b/CHANGES.md
index 8ee41475c947849d45056706696b15fd4ef313ac..b89bea64bd102289917398905feb548d18a84397 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,6 +4,10 @@ moodle-auth_ldap_syncplus
 Changes
 -------
 
+### Unreleased
+
+* 2018-05-16 - Implement Privacy API.
+
 ### v3.4-r3
 
 * 2018-02-07 - Bugfix: Login via email for first-time LDAP logins did not work if multiple LDAP contexts were configured; Credits to derhelge.
diff --git a/classes/privacy/provider.php b/classes/privacy/provider.php
new file mode 100644
index 0000000000000000000000000000000000000000..8b81de039c6754f69cbe48504f2bc450cc9f9505
--- /dev/null
+++ b/classes/privacy/provider.php
@@ -0,0 +1,47 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Auth plugin "LDAP SyncPlus" - Privacy provider
+ *
+ * @package    auth_ldap_syncplus
+ * @copyright  2018 Alexander Bias, Ulm University <alexander.bias@uni-ulm.de>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace auth_ldap_syncplus\privacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Privacy Subsystem implementing null_provider.
+ *
+ * @package    auth_ldap_syncplus
+ * @copyright  2018 Alexander Bias, Ulm University <alexander.bias@uni-ulm.de>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return string
+     */
+    public static function get_reason() : string {
+        return 'privacy:metadata';
+    }
+}
diff --git a/lang/en/auth_ldap_syncplus.php b/lang/en/auth_ldap_syncplus.php
index 977f18b61e0ce26edcb56d8ad5475a29a9e52aa5..13f5e12e78beeef0689b60f4c53c633a7c94bf2d 100644
--- a/lang/en/auth_ldap_syncplus.php
+++ b/lang/en/auth_ldap_syncplus.php
@@ -30,6 +30,7 @@ $string['auth_ldap_syncplusdescription'] = 'This method provides authentication
                                   password are checked.';
 $string['auth_remove_deletewithgraceperiod'] = 'Suspend internal and fully delete internal after grace period';
 $string['nouserentriestosuspend'] = 'No user entries to be suspended';
+$string['privacy:metadata'] = 'The LDAP server (Sync Plus) authentication plugin does not store any personal data.';
 $string['removeuser_graceperiod'] = 'Fully deleting grace period';
 $string['removeuser_graceperiod_desc'] = 'After suspending a user internally, the synchronization script will wait for this number of days until the user will be fully deleted internal. If the user re-appears in LDAP within this grace period, the user will be reactivated. Note: This setting is only used if "Removed ext user" is set to "Suspend internal and fully delete internal after grace period"';
 $string['sync_script_createuser_enabled'] = 'If enabled (default), the synchronization script will create Moodle accounts for all LDAP users if they have never logged into Moodle before. If disabled, the synchronization script will not create Moodle accounts for all LDAP users.';
diff --git a/version.php b/version.php
index 304433edb4dd8b11b52333f6c291923d170aa117..97f27672a33f8a3fb20ecc2d297e2c03424f2ced 100644
--- a/version.php
+++ b/version.php
@@ -25,7 +25,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 $plugin->component = 'auth_ldap_syncplus';
-$plugin->version = 2018020800;
+$plugin->version = 2018051600;
 $plugin->release = 'v3.4-r3';
 $plugin->requires = 2017111300;
 $plugin->maturity = MATURITY_STABLE;