diff --git a/application/Espo/Core/Acl/Table.php b/application/Espo/Core/Acl/Table.php
index d1c4e9ee00..04513c56e7 100644
--- a/application/Espo/Core/Acl/Table.php
+++ b/application/Espo/Core/Acl/Table.php
@@ -73,6 +73,8 @@ class Table
 
     protected $forbiddenFieldsCache = array();
 
+    protected $isStrictModeForced = false;
+
     protected $isStrictMode = false;
 
     public function __construct(User $user, Config $config = null, FileManager $fileManager = null, Metadata $metadata = null, FieldManagerUtil $fieldManager = null)
@@ -83,7 +85,11 @@ class Table
             'fieldTableQuickAccess' => (object) [],
         ];
 
-        $this->isStrictMode = $config->get('aclStrictMode', false);
+        if ($this->isStrictModeForced) {
+            $this->isStrictMode = true;
+        } else {
+            $this->isStrictMode = $config->get('aclStrictMode', false);
+        }
 
         $this->user = $user;
 
@@ -405,7 +411,12 @@ class Table
             return;
         }
 
-        $data = $this->metadata->get('app.'.$this->type.'.default.scopeLevel', array());
+        $defaultsGroupName = 'default';
+        if ($this->isStrictMode) {
+            $defaultsGroupName = 'strictDefault';
+        }
+
+        $data = $this->metadata->get(['app', $this->type, $defaultsGroupName, 'scopeLevel'], []);
 
         foreach ($data as $scope => $item) {
             if (isset($table->$scope)) continue;
@@ -416,7 +427,7 @@ class Table
             $table->$scope = $value;
         }
 
-        $defaultFieldData = $this->metadata->get('app.'.$this->type.'.default.fieldLevel', array());
+        $defaultFieldData = $this->metadata->get(['app', $this->type, $defaultsGroupName, 'fieldLevel'], []);
 
         foreach ($this->getScopeList() as $scope) {
             if (isset($table->$scope) && $table->$scope === false) continue;
@@ -424,7 +435,7 @@ class Table
 
             $fieldList = array_keys($this->getMetadata()->get("entityDefs.{$scope}.fields", []));
 
-            $defaultScopeFieldData = $this->metadata->get('app.'.$this->type.'.default.scopeFieldLevel.' . $scope, array());
+            $defaultScopeFieldData = $this->metadata->get('app.'.$this->type.'.'.$defaultsGroupName.'.scopeFieldLevel.' . $scope, []);
 
             foreach (array_merge($defaultFieldData, $defaultScopeFieldData) as $field => $f) {
                 if (!in_array($field, $fieldList)) continue;
diff --git a/application/Espo/Core/AclPortal/Table.php b/application/Espo/Core/AclPortal/Table.php
index 44735bda4a..c2835e5187 100644
--- a/application/Espo/Core/AclPortal/Table.php
+++ b/application/Espo/Core/AclPortal/Table.php
@@ -50,6 +50,8 @@ class Table extends \Espo\Core\Acl\Table
 
     protected $levelList = ['yes', 'all', 'account', 'contact', 'own', 'no'];
 
+    protected $isStrictModeForced = true;
+
     public function __construct(User $user, Portal $portal, Config $config = null, FileManager $fileManager = null, Metadata $metadata = null, FieldManagerUtil $fieldManager = null)
     {
         if (empty($portal)) {
diff --git a/application/Espo/Resources/metadata/app/acl.json b/application/Espo/Resources/metadata/app/acl.json
index 6d19d31c4a..ba87b4375f 100644
--- a/application/Espo/Resources/metadata/app/acl.json
+++ b/application/Espo/Resources/metadata/app/acl.json
@@ -75,6 +75,23 @@
     },
     "default": {
         "scopeLevel": {
+            "User": {
+                "read": "all"
+            }
+        },
+        "fieldLevel": {
+        },
+        "scopeFieldLevel": {
+            "User": {
+                "gender": false
+            }
+        }
+    },
+    "strictDefault": {
+        "scopeLevel": {
+            "User": {
+                "read": "own"
+            }
         },
         "fieldLevel": {
         },
diff --git a/application/Espo/Resources/metadata/app/aclPortal.json b/application/Espo/Resources/metadata/app/aclPortal.json
index 83ee1b3c94..095aa0b669 100644
--- a/application/Espo/Resources/metadata/app/aclPortal.json
+++ b/application/Espo/Resources/metadata/app/aclPortal.json
@@ -86,7 +86,7 @@
             }
         }
     },
-    "default": {
+    "strictDefault": {
         "scopeLevel": {
         },
         "fieldLevel": {
@@ -115,6 +115,9 @@
                 },
                 "leads": false
             },
+            "KnowledgeBaseArticle": {
+                "assignedUser": false
+            },
             "User": {
                 "gender": false
             }
@@ -123,16 +126,9 @@
     "valuePermissionList": [
         "exportPermission"
     ],
-    "permissionsDefaults": {
-        "exportPermission": "no"
-    },
     "permissionsStrictDefaults": {
         "exportPermission": "no"
     },
-    "scopeLevelTypesDefaults": {
-        "boolean": false,
-        "record": false
-    },
     "scopeLevelTypesStrictDefaults": {
         "boolean": false,
         "record": false