diff --git a/components/ILIAS/Certificate/classes/File/Certificate/class.ilPdfGenerator.php b/components/ILIAS/Certificate/classes/File/Certificate/class.ilPdfGenerator.php
index 356bd93f53f4..32aef76d0ad6 100755
--- a/components/ILIAS/Certificate/classes/File/Certificate/class.ilPdfGenerator.php
+++ b/components/ILIAS/Certificate/classes/File/Certificate/class.ilPdfGenerator.php
@@ -109,7 +109,7 @@ private function createPDFScalar(ilUserCertificate $certificate): string
         $background_rid = $this->irss->manage()->find($certificate->getCurrentBackgroundImageUsed());
         $background_src = '';
         if ($background_rid instanceof ResourceIdentification) {
-            $background_src = $this->irss->consume()->src($background_rid)->getSrc();
+            $background_src = $this->irss->consume()->src($background_rid)->getSrc(true);
 
             $certificateContent = str_replace(
                 ['[BACKGROUND_IMAGE]'],
@@ -124,8 +124,6 @@ private function createPDFScalar(ilUserCertificate $certificate): string
             );
         }
 
-
-
         $pdf_base64 = $this->rpcHelper->ilFO2PDF('RPCTransformationHandler', $certificateContent);
 
         return $pdf_base64->scalar;
diff --git a/components/ILIAS/Certificate/classes/Form/Repository/class.ilCertificateSettingsFormRepository.php b/components/ILIAS/Certificate/classes/Form/Repository/class.ilCertificateSettingsFormRepository.php
index 267980bc0acd..bfa730fc6b71 100755
--- a/components/ILIAS/Certificate/classes/Form/Repository/class.ilCertificateSettingsFormRepository.php
+++ b/components/ILIAS/Certificate/classes/Form/Repository/class.ilCertificateSettingsFormRepository.php
@@ -216,7 +216,7 @@ public function createForm(ilCertificateGUI $certificateGUI): ilPropertyFormGUI
                 $this->card_thumbnail_definition
             );
             $flavour_urls = $this->irss->consume()->flavourUrls($background_flavour);
-            foreach ($flavour_urls->getURLs() as $url) {
+            foreach ($flavour_urls->getURLs(true) as $url) {
                 /** @var string $url */
                 $bgimage->setImage($url);
             }
@@ -245,7 +245,7 @@ public function createForm(ilCertificateGUI $certificateGUI): ilPropertyFormGUI
         if ('' !== $thumbnail_image_identification) {
             $identification = $this->irss->manage()->find($thumbnail_image_identification);
             if ($identification instanceof ResourceIdentification) {
-                $thumbnailImage->setImage($this->irss->consume()->src($identification)->getSrc());
+                $thumbnailImage->setImage($this->irss->consume()->src($identification)->getSrc(true));
                 $allowThumbnailDeletion = true;
             }
         } elseif ($old_thumbnail_image_path !== '' && $this->filesystem->has($old_thumbnail_image_path)) {
diff --git a/components/ILIAS/Certificate/classes/Template/Action/Preview/ilCertificateTemplatePreviewAction.php b/components/ILIAS/Certificate/classes/Template/Action/Preview/ilCertificateTemplatePreviewAction.php
index 67a5176b3ff2..fd28510132eb 100755
--- a/components/ILIAS/Certificate/classes/Template/Action/Preview/ilCertificateTemplatePreviewAction.php
+++ b/components/ILIAS/Certificate/classes/Template/Action/Preview/ilCertificateTemplatePreviewAction.php
@@ -128,7 +128,7 @@ private function exchangeCertificateVariables(
 
         $identification = $this->irss->manage()->find($template->getBackgroundImageIdentification());
         if ($identification instanceof ResourceIdentification) {
-            $backgroundImagePath = $this->irss->consume()->src($identification)->getSrc();
+            $backgroundImagePath = $this->irss->consume()->src($identification)->getSrc(true);
         }
 
         return str_replace(
diff --git a/components/ILIAS/Certificate/classes/User/class.ilUserCertificateGUI.php b/components/ILIAS/Certificate/classes/User/class.ilUserCertificateGUI.php
index d408c03ba567..cbac0aae98c5 100755
--- a/components/ILIAS/Certificate/classes/User/class.ilUserCertificateGUI.php
+++ b/components/ILIAS/Certificate/classes/User/class.ilUserCertificateGUI.php
@@ -169,7 +169,9 @@ public function listCertificates(): void
                 if ($thumbnail_image_identification === '' || $thumbnail_image_identification === '-') {
                     $thumbnail_image_identification = $certificateData['thumbnail_image_path'] ?? '';
                     if ($thumbnail_image_identification !== '' && $this->filesystem->has($thumbnail_image_identification)) {
-                        $imagePath = ilFileUtils::getWebspaceDir() . $thumbnail_image_identification;
+                        $imagePath = ilWACSignedPath::signFile(
+                            ilFileUtils::getWebspaceDir() . $thumbnail_image_identification
+                        );
                     }
                 } else {
                     $thumb_rid = $this->irss->manage()->find($thumbnail_image_identification);
@@ -179,7 +181,7 @@ public function listCertificates(): void
                 }
 
                 if ($imagePath === '') {
-                    $imagePath = ilUtil::getImagePath('standard/icon_cert.svg');
+                    $imagePath = ilWACSignedPath::signFile(ilUtil::getImagePath('standard/icon_cert.svg'));
                 }
 
                 $cardImage = $this->uiFactory->image()->standard(
diff --git a/components/ILIAS/Certificate/classes/class.ilCertificateGUI.php b/components/ILIAS/Certificate/classes/class.ilCertificateGUI.php
index df11aa1733af..13fc586e60d4 100755
--- a/components/ILIAS/Certificate/classes/class.ilCertificateGUI.php
+++ b/components/ILIAS/Certificate/classes/class.ilCertificateGUI.php
@@ -59,6 +59,7 @@ class ilCertificateGUI
     private readonly ilCertificateTemplateExportAction $exportAction;
     private readonly ilCertificateTemplatePreviewAction $previewAction;
     private readonly FileUpload $fileUpload;
+    private readonly Filesystem $file_system;
     private readonly string $certificatePath;
     private readonly ilPageFormats $pageFormats;
     private readonly ilLogger $logger;
@@ -79,7 +80,7 @@ public function __construct(
         ilCertificateTemplatePreviewAction $previewAction = null,
         FileUpload $fileUpload = null,
         private readonly ilSetting $settings = new ilSetting('certificate'),
-        Filesystem $fileSystem = null,
+        Filesystem $file_system = null,
         Filesystem $tmp_file_system = null
     ) {
         global $DIC;
@@ -138,6 +139,7 @@ public function __construct(
             $this->irss
         );
         $this->fileUpload = $fileUpload ?? $DIC->upload();
+        $this->file_system = $file_system ?? $DIC->filesystem()->web();
         $this->database = $DIC->database();
     }
 
@@ -390,6 +392,22 @@ private function saveCertificate(ilPropertyFormGUI $form, array $form_fields, in
         ) {
             $new_background_rid = null;
         }
+        if (
+            is_string($new_background_rid) &&
+            is_string($this->global_certificate_settings->getBackgroundImageIdentification()) &&
+            $new_background_rid === $this->global_certificate_settings->getBackgroundImageIdentification()
+        ) {
+            if ($this->file_system->has($new_background_rid)) {
+                $new_background_rid = $this->irss->manage()->stream(
+                    $this->file_system->readStream($new_background_rid),
+                    $this->stakeholder
+                );
+            } else {
+                $old_background_image = $new_background_rid;
+                $new_background_rid = null;
+            }
+        }
+
         $new_thumbnail_rid = !$should_delete_thumbnail ? $current_thumbnail_rid : null;
         if ($form->checkInput()) {
             try {
diff --git a/components/ILIAS/Certificate/classes/class.ilObjCertificateSettingsGUI.php b/components/ILIAS/Certificate/classes/class.ilObjCertificateSettingsGUI.php
index 95b9cabb9e55..a5c565e5b50a 100755
--- a/components/ILIAS/Certificate/classes/class.ilObjCertificateSettingsGUI.php
+++ b/components/ILIAS/Certificate/classes/class.ilObjCertificateSettingsGUI.php
@@ -177,12 +177,12 @@ public function settings(): void
                     }
                 }
             }
-        }#
+        }
 
         if ($this->object->hasBackgroundImage()) {
             $rid = $this->object->getBackgroundImageIdentification();
             if ($rid instanceof ResourceIdentification) {
-                $bgimage->setImage($this->irss->consume()->src($rid)->getSrc());
+                $bgimage->setImage($this->irss->consume()->src($rid)->getSrc(true));
             } elseif (is_string($rid)) {
                 $bgimage->setImage($rid);
             }