diff --git a/auth/cas/config.html b/auth/cas/config.html
index 222845b1628..54db7735567 100644
--- a/auth/cas/config.html
+++ b/auth/cas/config.html
@@ -321,7 +321,7 @@ if (!ldap_paged_results_supported($config->ldap_version)) {
         <label for="bind_pw"><?php print_string('auth_ldap_bind_pw_key', 'auth_ldap') ?></label>
     </td>
     <td>
-        <input name="bind_pw" id="bind_pw" type="password" size="30" value="<?php echo $config->bind_pw?>" />
+        <input name="bind_pw" id="bind_pw" type="password" size="30" value="<?php echo $config->bind_pw?>" autocomplete="off"/>
         <?php if (isset($err['bind_pw'])) { echo $OUTPUT->error_text($err['bind_pw']); } ?>
     </td>
     <td>
diff --git a/auth/db/config.html b/auth/db/config.html
index 6ae71405b9a..9366967b048 100644
--- a/auth/db/config.html
+++ b/auth/db/config.html
@@ -124,7 +124,7 @@
 <tr valign="top" class="required">
     <td align="right"><label for="pass"><?php print_string("auth_dbpass_key", "auth_db") ?></label></td>
     <td>
-        <input id="pass" name="pass" type="password" size="30" value="<?php p($config->pass)?>" />
+        <input id="pass" name="pass" type="password" size="30" value="<?php p($config->pass)?>" autocomplete="off"/>
         <?php
 
         if (isset($err["pass"])) {
diff --git a/auth/fc/config.html b/auth/fc/config.html
index 0d0da60b452..602941122c6 100644
--- a/auth/fc/config.html
+++ b/auth/fc/config.html
@@ -61,7 +61,7 @@
 <tr valign="top" class="required">
     <td align="right"><label for="passwd"><?php print_string("auth_fcpasswd_key", "auth_fc") ?>:</label></td>
     <td>
-        <input name="passwd" id="passwd" type="password" size="30" maxlength="12" value="<?php echo $config->passwd?>" />
+        <input name="passwd" id="passwd" type="password" size="30" maxlength="12" value="<?php echo $config->passwd?>" autocomplete="off"/>
     <?php  if (isset($err["passwd"])) echo $OUTPUT->error_text($err["passwd"]); ?>
     </td>
     <td>
diff --git a/auth/ldap/config.html b/auth/ldap/config.html
index 514039787ab..f2186ca1b6f 100644
--- a/auth/ldap/config.html
+++ b/auth/ldap/config.html
@@ -223,7 +223,7 @@ if (!ldap_paged_results_supported($config->ldap_version)) {
         <label for="bind_pw"><?php print_string('auth_ldap_bind_pw_key', 'auth_ldap') ?></label>
     </td>
     <td>
-        <input name="bind_pw" id="bind_pw" type="password" size="30" value="<?php echo $config->bind_pw?>" />
+        <input name="bind_pw" id="bind_pw" type="password" size="30" value="<?php echo $config->bind_pw?>" autocomplete="off"/>
         <?php if (isset($err['bind_pw'])) { echo $OUTPUT->error_text($err['bind_pw']); } ?>
     </td>
     <td>