diff --git a/SECURITY.md b/SECURITY.md
index 75621867..09becb44 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -1,3 +1,3 @@
 # Security Policy
 
-Vulnerabilities can be reported by emailing info@joyqi.com
+Vulnerabilities can be reported by emailing security@typecho.org
diff --git a/var/Widget/Base/Comments.php b/var/Widget/Base/Comments.php
index 888d591e..f38a6367 100644
--- a/var/Widget/Base/Comments.php
+++ b/var/Widget/Base/Comments.php
@@ -79,16 +79,16 @@ class Comments extends Base implements QueryInterface, RowFilterInterface, Prima
         $insertStruct = [
             'cid'      => $rows['cid'],
             'created'  => empty($rows['created']) ? $this->options->time : $rows['created'],
-            'author'   => Common::strBy($rows['author']),
+            'author'   => Common::strBy($rows['author'] ?? null),
             'authorId' => empty($rows['authorId']) ? 0 : $rows['authorId'],
             'ownerId'  => empty($rows['ownerId']) ? 0 : $rows['ownerId'],
-            'mail'     => Common::strBy($rows['mail']),
-            'url'      => Common::strBy($rows['url']),
-            'ip'       => Common::strBy($rows['ip'], $this->request->getIp()),
-            'agent'    => Common::strBy($rows['agent'], $this->request->getAgent()),
-            'text'     => Common::strBy($rows['text']),
-            'type'     => Common::strBy($rows['type'], 'comment'),
-            'status'   => Common::strBy($rows['status'], 'approved'),
+            'mail'     => Common::strBy($rows['mail'] ?? null),
+            'url'      => Common::strBy($rows['url'] ?? null),
+            'ip'       => Common::strBy($rows['ip'] ?? null, $this->request->getIp()),
+            'agent'    => Common::strBy($rows['agent'] ?? null, $this->request->getAgent()),
+            'text'     => Common::strBy($rows['text'] ?? null),
+            'type'     => Common::strBy($rows['type'] ?? null, 'comment'),
+            'status'   => Common::strBy($rows['status'] ?? null, 'approved'),
             'parent'   => empty($rows['parent']) ? 0 : $rows['parent'],
         ];
 
@@ -136,11 +136,11 @@ class Comments extends Base implements QueryInterface, RowFilterInterface, Prima
 
         /** 构建插入结构 */
         $preUpdateStruct = [
-            'author' => Common::strBy($rows['author']),
-            'mail'   => Common::strBy($rows['mail']),
-            'url'    => Common::strBy($rows['url']),
-            'text'   => Common::strBy($rows['text']),
-            'status' => Common::strBy($rows['status'], 'approved'),
+            'author' => Common::strBy($rows['author'] ?? null),
+            'mail'   => Common::strBy($rows['mail'] ?? null),
+            'url'    => Common::strBy($rows['url'] ?? null),
+            'text'   => Common::strBy($rows['text'] ?? null),
+            'status' => Common::strBy($rows['status'] ?? null, 'approved'),
         ];
 
         $updateStruct = [];
diff --git a/var/Widget/Base/Contents.php b/var/Widget/Base/Contents.php
index eca52a9d..b8f59545 100644
--- a/var/Widget/Base/Contents.php
+++ b/var/Widget/Base/Contents.php
@@ -133,13 +133,13 @@ class Contents extends Base implements QueryInterface, RowFilterInterface, Prima
                 ? null : htmlspecialchars($rows['title']),
             'created'      => empty($rows['created']) ? $this->options->time : $rows['created'],
             'modified'     => $this->options->time,
-            'text'         => Common::strBy($rows['text']),
+            'text'         => Common::strBy($rows['text'] ?? null),
             'order'        => empty($rows['order']) ? 0 : intval($rows['order']),
             'authorId'     => $rows['authorId'] ?? $this->user->uid,
-            'template'     => Common::strBy($rows['template']),
-            'type'         => Common::strBy($rows['type'], 'post'),
-            'status'       => Common::strBy($rows['status'], 'publish'),
-            'password'     => Common::strBy($rows['password']),
+            'template'     => Common::strBy($rows['template'] ?? null),
+            'type'         => Common::strBy($rows['type'] ?? null, 'post'),
+            'status'       => Common::strBy($rows['status'] ?? null, 'publish'),
+            'password'     => Common::strBy($rows['password'] ?? null),
             'commentsNum'  => empty($rows['commentsNum']) ? 0 : $rows['commentsNum'],
             'allowComment' => !empty($rows['allowComment']) && 1 == $rows['allowComment'] ? 1 : 0,
             'allowPing'    => !empty($rows['allowPing']) && 1 == $rows['allowPing'] ? 1 : 0,
@@ -156,7 +156,7 @@ class Contents extends Base implements QueryInterface, RowFilterInterface, Prima
 
         /** 更新缩略名 */
         if ($insertId > 0) {
-            $this->applySlug(!isset($rows['slug']) || strlen($rows['slug']) === 0 ? null : $rows['slug'], $insertId, $insertStruct['title']);
+            $this->applySlug(Common::strBy($rows['slug'] ?? null), $insertId, $insertStruct['title']);
         }
 
         return $insertId;
@@ -230,11 +230,11 @@ class Contents extends Base implements QueryInterface, RowFilterInterface, Prima
             'title'        => !isset($rows['title']) || strlen($rows['title']) === 0
                 ? null : htmlspecialchars($rows['title']),
             'order'        => empty($rows['order']) ? 0 : intval($rows['order']),
-            'text'         => Common::strBy($rows['text']),
-            'template'     => Common::strBy($rows['template']),
-            'type'         => Common::strBy($rows['type'], 'post'),
-            'status'       => Common::strBy($rows['status'], 'publish'),
-            'password'     => Common::strBy($rows['password']),
+            'text'         => Common::strBy($rows['text'] ?? null),
+            'template'     => Common::strBy($rows['template'] ?? null),
+            'type'         => Common::strBy($rows['type'] ?? null, 'post'),
+            'status'       => Common::strBy($rows['status'] ?? null, 'publish'),
+            'password'     => Common::strBy($rows['password'] ?? null),
             'allowComment' => !empty($rows['allowComment']) && 1 == $rows['allowComment'] ? 1 : 0,
             'allowPing'    => !empty($rows['allowPing']) && 1 == $rows['allowPing'] ? 1 : 0,
             'allowFeed'    => !empty($rows['allowFeed']) && 1 == $rows['allowFeed'] ? 1 : 0,
diff --git a/var/Widget/Contents/Attachment/Edit.php b/var/Widget/Contents/Attachment/Edit.php
index 3b86b2ad..39308b3a 100644
--- a/var/Widget/Contents/Attachment/Edit.php
+++ b/var/Widget/Contents/Attachment/Edit.php
@@ -95,7 +95,7 @@ class Edit extends Contents implements ActionInterface
 
         /** 取出数据 */
         $input = $this->request->from('name', 'slug', 'description');
-        $input['slug'] = Common::slugName(Common::strBy($input['slug'], $input['name']));
+        $input['slug'] = Common::slugName(Common::strBy($input['slug'] ?? null, $input['name']));
 
         $attachment['title'] = $input['name'];
         $attachment['slug'] = $input['slug'];
diff --git a/var/Widget/Metas/Category/Edit.php b/var/Widget/Metas/Category/Edit.php
index c9672e1e..906f9d80 100644
--- a/var/Widget/Metas/Category/Edit.php
+++ b/var/Widget/Metas/Category/Edit.php
@@ -133,7 +133,7 @@ class Edit extends Metas implements ActionInterface
         /** 取出数据 */
         $category = $this->request->from('name', 'slug', 'description', 'parent');
 
-        $category['slug'] = Common::slugName(Common::strBy($category['slug'], $category['name']));
+        $category['slug'] = Common::slugName(Common::strBy($category['slug'] ?? null, $category['name']));
         $category['type'] = 'category';
         $category['order'] = $this->getMaxOrder('category', $category['parent']) + 1;
 
@@ -284,7 +284,7 @@ class Edit extends Metas implements ActionInterface
         /** 取出数据 */
         $category = $this->request->from('name', 'slug', 'description', 'parent');
         $category['mid'] = $this->request->get('mid');
-        $category['slug'] = Common::slugName(Common::strBy($category['slug'], $category['name']));
+        $category['slug'] = Common::slugName(Common::strBy($category['slug'] ?? null, $category['name']));
         $category['type'] = 'category';
         $current = $this->db->fetchRow($this->select()->where('mid = ?', $category['mid']));
 
diff --git a/var/Widget/Metas/Tag/Edit.php b/var/Widget/Metas/Tag/Edit.php
index ad6d3f16..24aa35ca 100644
--- a/var/Widget/Metas/Tag/Edit.php
+++ b/var/Widget/Metas/Tag/Edit.php
@@ -132,7 +132,7 @@ class Edit extends Metas implements ActionInterface
         /** 取出数据 */
         $tag = $this->request->from('name', 'slug');
         $tag['type'] = 'tag';
-        $tag['slug'] = Common::slugName(Common::strBy($tag['slug'], $tag['name']));
+        $tag['slug'] = Common::slugName(Common::strBy($tag['slug'] ?? null, $tag['name']));
 
         /** 插入数据 */
         $tag['mid'] = $this->insert($tag);
@@ -254,7 +254,7 @@ class Edit extends Metas implements ActionInterface
         /** 取出数据 */
         $tag = $this->request->from('name', 'slug', 'mid');
         $tag['type'] = 'tag';
-        $tag['slug'] = Common::slugName(Common::strBy($tag['slug'], $tag['name']));
+        $tag['slug'] = Common::slugName(Common::strBy($tag['slug'] ?? null, $tag['name']));
 
         /** 更新数据 */
         $this->update($tag, $this->db->sql()->where('mid = ?', $this->request->filter('int')->get('mid')));
diff --git a/var/Widget/XmlRpc.php b/var/Widget/XmlRpc.php
index dd44538c..e74a71f6 100644
--- a/var/Widget/XmlRpc.php
+++ b/var/Widget/XmlRpc.php
@@ -449,9 +449,9 @@ class XmlRpc extends Contents implements ActionInterface, Hook
     {
         /** 开始接受数据 */
         $input['name'] = $category['name'];
-        $input['slug'] = Common::slugName(Common::strBy($category['slug'], $category['name']));
+        $input['slug'] = Common::slugName(Common::strBy($category['slug'] ?? null, $category['name']));
         $input['parent'] = $category['parent_id'] ?? ($category['parent'] ?? 0);
-        $input['description'] = Common::strBy($category['description'], $category['name']);
+        $input['description'] = Common::strBy($category['description'] ?? null, $category['name']);
 
         /** 调用已有组件 */
         $categoryWidget = CategoryEdit::alloc(null, $input, function (CategoryEdit $category) {