diff --git a/lib/security.js b/lib/security.js
index 6a839b3..80d2c97 100644
--- a/lib/security.js
+++ b/lib/security.js
@@ -1,50 +1,51 @@
 ////////////////////////////////////////////////////////////////////////
-// Security API
+// Security Policy API
 ////////////////////////////////////////////////////////////////////////
 
+var SYS = require("lib/system");
+var FILE = require("lib/file");
 var REG = require("lib/registry");
-var WSH = CreateObject("WScript.Shell");
 
-exports.VERSIONINFO = "Security Lib (security.js) version 0.1";
-exports.global = global;
-exports.require = global.require;
+var DISABLED = 0x00000001;
+var ENABLED = 0x00000000;
 
-exports.DISABLED = 0x00000001;
-exports.ENABLED = 0x00000000;
+function __BOOL_TO_DWORD__(x) {
+    return x ? DISABLED : ENABLED;
+}
 
-// check 'run as administrator'
-exports.isElevated = function() {
+// Check 'Run as administrator'
+function isElevated = function() {
     try {
-        WSH.RegRead("HKEY_USERS\\s-1-5-19\\");
+        CreateObject("WScript.Shell").RegRead("HKEY_USERS\\s-1-5-19\\");
         return true;
     } catch (e) {
         return false;
     }
-};
+}
 
-// turn on/off Windows Defender
-exports.setAntiSpyware = function(buffer) {
+// Turn on/off Windows Defender
+function setDisableAntiSpyware(x) {
     var path = "SOFTWARE\\Policies\\Microsoft\\Windows Defender";
     var key = "DisableAntiSpyware";
-    REG.write(REG.HKLM, path, key, buffer, REG.DWORD);
+    REG.write(REG.HKLM, path, key, __BOOL_TO_DWORD__(x), REG.DWORD);
 };
 
-// trun on/off Registry Editor (regedit)
-exports.setRegedit = function(buffer) {
+// Trun on/off Registry Editor (regedit)
+function setDisableRegistryTools(x) {
     var path = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System";
     var key = "DisableRegistryTools";
-    REG.write(REG.HKLM, path, key, buffer, REG.DWORD);
-};
+    REG.write(REG.HKLM, path, key, __BOOL_TO_DWORD__(x), REG.DWORD);
+}
 
-// turn on/off Task Manager (taskmgr)
-exports.setTaskmgr = function(buffer) {
+// Turn on/off Task Manager (taskmgr)
+function setDisableTaskMgr(x) {
     var path = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System";
     var key = "DisableTaskMgr";
-    REG.write(REG.HKLM, path, key, buffer, REG.DWORD);
-};
+    REG.write(REG.HKLM, path, key, __BOOL_TO_DWORD__(x), REG.DWORD);
+}
 
-// detect antivirus from security center
-exports.detectAntivirus = function() {
+// Get antivirus products list from the security center
+function getAntiVirusProducts() {
     var displayNames = [];
 
     var objWMIService = GetObject("winmgmts:\\.\root\SecurityCenter2");
@@ -56,4 +57,27 @@ exports.detectAntivirus = function() {
     }
 
     return displayNames;
-};
+}
+
+// Open the threat setting window on Windows Defender
+function OpenThreatSettings() {
+    var FN_MSASCui = SYS.getEnvString("%ProgramFiles%") + "\\Windows Defender\\MSASCui.exe";
+    if (!FILE.fileExists(FN_MSASCui)) {
+        SHELL.runAs(FN_MSASCui);   // old Windows Defender
+    } else {
+        SHELL.runAs("windowsdefender://Threatsettings");
+    }
+}
+
+exports.DISABLED = DISABLED;
+exports.ENABLED = ENABLED;
+exports.setDisableAntiSpyware = setDisableAntiSpyware;
+exports.setDisableRegistryTools = setDisableRegistryTools;
+exports.setDisableTaskMgr = setDisableTaskMgr;
+exports.getAntiVirusProducts = getAntiVirusProducts;
+exports.OpenThreatSettings = OpenThreatSettings;
+
+exports.VERSIONINFO = "Security Policy Module (security.js) version 0.2";
+exports.AUTHOR = "catswords@protonmail.com";
+exports.global = global;
+exports.require = global.require;