diff --git a/Include/Aurora/Runtime.hpp b/Include/Aurora/Runtime.hpp
index a7eb3765..ad281c5b 100644
--- a/Include/Aurora/Runtime.hpp
+++ b/Include/Aurora/Runtime.hpp
@@ -275,9 +275,9 @@ namespace Aurora
 
     struct FIOConfig
     {
-        /// You can bypass branding by assigning an empty string to 'defaultBrand'
-        AuString defaultBrand = "Aurora SDK Sample";
+        AuOptional<AuString> optDefaultBrand = "Aurora SDK Sample";
         bool bForceOverlappedUtilsToDelegatedThreadPool { false };
+        bool bIsIntranetTrusted {};
         AuUInt32 uOverlappedUtilsThreadPoolSize { 2 }; // note: this does not relate to the overlapped aio apis
     };                                                 //       these threads are only spawned as a fallback for AuFS::Overlapped*** apis
 
diff --git a/Source/IO/FS/FileTrust.NT.cpp b/Source/IO/FS/FileTrust.NT.cpp
index 6f099a03..46d3ef24 100644
--- a/Source/IO/FS/FileTrust.NT.cpp
+++ b/Source/IO/FS/FileTrust.NT.cpp
@@ -53,7 +53,7 @@ namespace Aurora::IO::FS
             return !AuFS::FileExists(path);
         }
 
-        return AuStringContains(content, "ZoneId=1\r\n") || // intranet
+        return (gRuntimeConfig.fio.bIsIntranetTrusted && AuStringContains(content, "ZoneId=1\r\n")) || // intranet
             AuStringContains(content, "ZoneId=3\r\n") || // internet
             AuStringContains(content, "ZoneId=4\r\n");  // untrusted
     }
diff --git a/Source/IO/FS/Resources.cpp b/Source/IO/FS/Resources.cpp
index 97113ad2..b6021adc 100644
--- a/Source/IO/FS/Resources.cpp
+++ b/Source/IO/FS/Resources.cpp
@@ -305,13 +305,13 @@ namespace Aurora::IO::FS
     static void ChangeDir()
     {
     #if !defined(AU_NO_AU_HOME_BRANDING)
-        if (gRuntimeConfig.fio.defaultBrand.size())
+        if (gRuntimeConfig.fio.optDefaultBrand)
         {
         #if !defined(AURORA_PLATFORM_WIN32)
-            gApplicationData += "/" + gRuntimeConfig.fio.defaultBrand;
+            gApplicationData += "/" + gRuntimeConfig.fio.optDefaultBrand.value();
         #endif
-            gHomeDirectory   += "/" + gRuntimeConfig.fio.defaultBrand;
-            gProgramsFolder  += "/" + gRuntimeConfig.fio.defaultBrand;
+            gHomeDirectory   += "/" + gRuntimeConfig.fio.optDefaultBrand.value();
+            gProgramsFolder  += "/" + gRuntimeConfig.fio.optDefaultBrand.value();
         }
     #endif
 
@@ -327,9 +327,9 @@ namespace Aurora::IO::FS
         }
 
         #if defined(AURORA_PLATFORM_WIN32)
-        if (gRuntimeConfig.fio.defaultBrand.size())
+        if (gRuntimeConfig.fio.optDefaultBrand)
         {
-            gApplicationData += "\\" + gRuntimeConfig.fio.defaultBrand;
+            gApplicationData += "\\" + gRuntimeConfig.fio.optDefaultBrand.value();
         }
         #endif