diff --git a/code/AuditHook.php b/code/AuditHook.php
index 11f9b95..2862ad4 100644
--- a/code/AuditHook.php
+++ b/code/AuditHook.php
@@ -160,7 +160,7 @@ public static function handle_manipulation($manipulation)
     /**
      * Log a record being published.
      */
-    public function onAfterPublish(&$original)
+    protected function onAfterPublish(&$original)
     {
         $member = Security::getCurrentUser();
         if (!$member || !$member->exists()) {
@@ -203,7 +203,7 @@ public function onAfterPublish(&$original)
     /**
      * Log a record being unpublished.
      */
-    public function onAfterUnpublish()
+    protected function onAfterUnpublish()
     {
         $member = Security::getCurrentUser();
         if (!$member || !$member->exists()) {
@@ -223,7 +223,7 @@ public function onAfterUnpublish()
     /**
      * Log a record being reverted to live.
      */
-    public function onAfterRevertToLive()
+    protected function onAfterRevertToLive()
     {
         $member = Security::getCurrentUser();
         if (!$member || !$member->exists()) {
@@ -244,7 +244,7 @@ public function onAfterRevertToLive()
     /**
      * Log a record being duplicated.
      */
-    public function onAfterDuplicate()
+    protected function onAfterDuplicate()
     {
         $member = Security::getCurrentUser();
         if (!$member || !$member->exists()) {
@@ -284,7 +284,7 @@ public function onAfterDelete()
     /**
      * Log a record being restored to stage.
      */
-    public function onAfterRestoreToStage()
+    protected function onAfterRestoreToStage()
     {
         $member = Security::getCurrentUser();
         if (!$member || !$member->exists()) {
@@ -316,7 +316,7 @@ public function afterMemberLoggedIn()
     /**
      * Log successfully restored sessions from "remember me" cookies ("auto login").
      */
-    public function memberAutoLoggedIn()
+    protected function memberAutoLoggedIn()
     {
         $this->getAuditLogger()->info(sprintf(
             '"%s" (ID: %s) successfully restored autologin session',
@@ -348,7 +348,7 @@ public function authenticationFailed($data)
     /**
      * Log failed login attempts when the email address doesn't map to an existing member record
      */
-    public function authenticationFailedUnknownUser($data)
+    protected function authenticationFailedUnknownUser($data)
     {
         $this->authenticationFailed($data);
     }
@@ -356,7 +356,7 @@ public function authenticationFailedUnknownUser($data)
     /**
      * Log permission failures (where the status is set after init of page).
      */
-    public function onAfterInit()
+    protected function onAfterInit()
     {
         // Suppress errors if dev/build necessary
         if (!Security::database_is_ready()) {
diff --git a/code/AuditHookMFA.php b/code/AuditHookMFA.php
index 6beb793..7e41f7a 100644
--- a/code/AuditHookMFA.php
+++ b/code/AuditHookMFA.php
@@ -23,7 +23,7 @@ class AuditHookMFA extends DataExtension
      * @param Member $member
      * @param MethodInterface $method
      */
-    public function onMethodVerificationSuccess(Member $member, $method)
+    protected function onMethodVerificationSuccess(Member $member, $method)
     {
         $this->getAuditLogger()->info(
             sprintf(
@@ -41,7 +41,7 @@ public function onMethodVerificationSuccess(Member $member, $method)
      * @param Member $member
      * @param MethodInterface $method
      */
-    public function onMethodVerificationFailure(Member $member, $method)
+    protected function onMethodVerificationFailure(Member $member, $method)
     {
         $context = [
             'method' => get_class($method),
@@ -64,7 +64,7 @@ public function onMethodVerificationFailure(Member $member, $method)
      *
      * @param Member $member
      */
-    public function onSkipRegistration(Member $member)
+    protected function onSkipRegistration(Member $member)
     {
         $this->getAuditLogger()->info(sprintf(
             '"%s" (ID: %s) skipped MFA registration',
@@ -77,7 +77,7 @@ public function onSkipRegistration(Member $member)
      * @param Member $member
      * @param MethodInterface $method
      */
-    public function onRegisterMethod(Member $member, $method)
+    protected function onRegisterMethod(Member $member, $method)
     {
         $context = [
             'method' => get_class($method),
@@ -96,7 +96,7 @@ public function onRegisterMethod(Member $member, $method)
      * @param Member $member
      * @param MethodInterface $method
      */
-    public function onRegisterMethodFailure(Member $member, $method)
+    protected function onRegisterMethodFailure(Member $member, $method)
     {
         $context = [
             'method' => get_class($method),
diff --git a/code/AuditHookSessionManager.php b/code/AuditHookSessionManager.php
index dc86795..9993134 100644
--- a/code/AuditHookSessionManager.php
+++ b/code/AuditHookSessionManager.php
@@ -21,7 +21,7 @@ class AuditHookSessionManager extends DataExtension
      *
      * @param LoginSession $loginSession
      */
-    public function onBeforeRemoveLoginSession(LoginSession $loginSession)
+    protected function onBeforeRemoveLoginSession(LoginSession $loginSession)
     {
         $member = $loginSession->Member();
         $currentUser = Security::getCurrentUser();
diff --git a/code/Extensions/DatabaseExtension.php b/code/Extensions/DatabaseExtension.php
index 8abb547..3142684 100644
--- a/code/Extensions/DatabaseExtension.php
+++ b/code/Extensions/DatabaseExtension.php
@@ -7,7 +7,7 @@
 
 class DatabaseExtension extends Extension
 {
-    public function onBeforeManipulate(array &$manipulation)
+    protected function onBeforeManipulate(array &$manipulation)
     {
         AuditHook::handle_manipulation($manipulation);
     }