diff --git a/Plugins/Flow.Launcher.Plugin.PluginsManager/Languages/en.xaml b/Plugins/Flow.Launcher.Plugin.PluginsManager/Languages/en.xaml
index 89ed9acf3..a30b8e966 100644
--- a/Plugins/Flow.Launcher.Plugin.PluginsManager/Languages/en.xaml
+++ b/Plugins/Flow.Launcher.Plugin.PluginsManager/Languages/en.xaml
@@ -10,6 +10,7 @@
     <system:String x:Key="plugin_pluginsmanager_uninstall_prompt">{0} by {1} {2}{3}Would you like to uninstall this plugin? After the uninstallation Flow will automatically restart.</system:String>
     <system:String x:Key="plugin_pluginsmanager_install_prompt">{0} by {1} {2}{3}Would you like to install this plugin? After the installation Flow will automatically restart.</system:String>
     <system:String x:Key="plugin_pluginsmanager_install_title">Plugin Install</system:String>
+    <system:String x:Key="plugin_pluginsmanager_install_from_web">Download and install {0}</system:String>
     <system:String x:Key="plugin_pluginsmanager_uninstall_title">Plugin Uninstall</system:String>
     <system:String x:Key="plugin_pluginsmanager_install_in_progress">Plugin installation in progress. Please wait...</system:String>
     <system:String x:Key="plugin_pluginsmanager_install_success_restart">Plugin successfully installed. Restarting Flow, please wait...</system:String>
@@ -25,7 +26,9 @@
     <system:String x:Key="plugin_pluginsmanager_update_alreadyexists">This plugin is already installed</system:String>
     <system:String x:Key="plugin_pluginsmanager_update_failed_title">Plugin Manifest Download Failed</system:String>
     <system:String x:Key="plugin_pluginsmanager_update_failed_subtitle">Please check if you can connect to github.com. This error means you may not be able to install or update plugins.</system:String>
-    
+    <system:String x:Key="plugin_pluginsmanager_install_unknown_source_warning_title">Installing from an unknown source</system:String>
+    <system:String x:Key="plugin_pluginsmanager_install_unknown_source_warning">You are installing this plugin from an unknown source and it may contain potential risks!{0}{0}Please ensure you understand where this plugin is from and that it is safe.{0}{0}Would you like to continue still?{0}{0}(You can switch off this warning via settings)</system:String>
+
     <!--Controls-->
     
     <!--Plugin Infos-->
@@ -42,5 +45,7 @@
     <system:String x:Key="plugin_pluginsmanager_plugin_contextmenu_newissue_subtitle">Suggest an enhancement or submit an issue to the plugin developer</system:String>
     <system:String x:Key="plugin_pluginsmanager_plugin_contextmenu_pluginsmanifest_title">Go to Flow's plugins repository</system:String>
     <system:String x:Key="plugin_pluginsmanager_plugin_contextmenu_pluginsmanifest_subtitle">Visit the PluginsManifest repository to see community-made plugin submissions</system:String>
-    
+
+    <!--Settings menu items-->
+    <system:String x:Key="plugin_pluginsmanager_plugin_settings_unknown_source">Install from unknown source warning</system:String>
 </ResourceDictionary>
\ No newline at end of file
diff --git a/Plugins/Flow.Launcher.Plugin.PluginsManager/Main.cs b/Plugins/Flow.Launcher.Plugin.PluginsManager/Main.cs
index 89a8e0ff5..f445826fa 100644
--- a/Plugins/Flow.Launcher.Plugin.PluginsManager/Main.cs
+++ b/Plugins/Flow.Launcher.Plugin.PluginsManager/Main.cs
@@ -55,7 +55,7 @@ namespace Flow.Launcher.Plugin.PluginsManager
 
         public async Task<List<Result>> QueryAsync(Query query, CancellationToken token)
         {
-            var search = query.Search.ToLower();
+            var search = query.Search;
 
             if (string.IsNullOrWhiteSpace(search))
                 return pluginManager.GetDefaultHotKeys();
@@ -70,9 +70,13 @@ namespace Flow.Launcher.Plugin.PluginsManager
 
             return search switch
             {
-                var s when s.StartsWith(Settings.HotKeyInstall) => await pluginManager.RequestInstallOrUpdate(s, token),
-                var s when s.StartsWith(Settings.HotkeyUninstall) => pluginManager.RequestUninstall(s),
-                var s when s.StartsWith(Settings.HotkeyUpdate) => await pluginManager.RequestUpdate(s, token),
+                //search could be url, no need ToLower() when passed in
+                var s when s.StartsWith(Settings.HotKeyInstall, StringComparison.OrdinalIgnoreCase)
+                                => await pluginManager.RequestInstallOrUpdate(search, token),
+                var s when s.StartsWith(Settings.HotkeyUninstall, StringComparison.OrdinalIgnoreCase)
+                                => pluginManager.RequestUninstall(search),
+                var s when s.StartsWith(Settings.HotkeyUpdate, StringComparison.OrdinalIgnoreCase) 
+                                => await pluginManager.RequestUpdate(search, token),
                 _ => pluginManager.GetDefaultHotKeys().Where(hotkey =>
                 {
                     hotkey.Score = StringMatcher.FuzzySearch(search, hotkey.Title).Score;
diff --git a/Plugins/Flow.Launcher.Plugin.PluginsManager/PluginsManager.cs b/Plugins/Flow.Launcher.Plugin.PluginsManager/PluginsManager.cs
index adc4beb6c..f37dd86ea 100644
--- a/Plugins/Flow.Launcher.Plugin.PluginsManager/PluginsManager.cs
+++ b/Plugins/Flow.Launcher.Plugin.PluginsManager/PluginsManager.cs
@@ -166,17 +166,12 @@ namespace Flow.Launcher.Plugin.PluginsManager
             catch (Exception e)
             {
                 if (e is HttpRequestException)
-                {
                     MessageBox.Show(Context.API.GetTranslation("plugin_pluginsmanager_download_error"),
                                         Context.API.GetTranslation("plugin_pluginsmanager_downloading_plugin"));
 
-                }
-                else
-                {
-                    Context.API.ShowMsgError(Context.API.GetTranslation("plugin_pluginsmanager_install_error_title"),
+                Context.API.ShowMsgError(Context.API.GetTranslation("plugin_pluginsmanager_install_error_title"),
                     string.Format(Context.API.GetTranslation("plugin_pluginsmanager_install_error_subtitle"),
                         plugin.Name));
-                }
 
                 Log.Exception("PluginsManager", "An error occured while downloading plugin", e, "InstallOrUpdate");
 
@@ -206,7 +201,7 @@ namespace Flow.Launcher.Plugin.PluginsManager
             if (autocompletedResults.Any())
                 return autocompletedResults;
 
-            var uninstallSearch = search.Replace(Settings.HotkeyUpdate, string.Empty).TrimStart();
+            var uninstallSearch = search.Replace(Settings.HotkeyUpdate, string.Empty, StringComparison.OrdinalIgnoreCase).TrimStart();
 
             var resultsForUpdate =
                 from existingPlugin in Context.API.GetAllPlugins()
@@ -341,26 +336,46 @@ namespace Flow.Launcher.Plugin.PluginsManager
 
             var result = new Result
             {
-                Title = filename,
-                SubTitle = $"Download and Install from URL",
+                Title = string.Format(Context.API.GetTranslation("plugin_pluginsmanager_install_from_web"), filename),
+                SubTitle = plugin.UrlDownload,
                 IcoPath = icoPath,
                 Action = e =>
                 {
                     if (e.SpecialKeyState.CtrlPressed)
                     {
-                        SearchWeb.NewTabInBrowser(url);
+                        SearchWeb.NewTabInBrowser(plugin.UrlDownload);
                         return ShouldHideWindow;
                     }
 
+                    if (Settings.WarnFromUnknownSource)
+                    {
+                        if (!InstallSourceKnown(plugin.UrlDownload)
+                            && MessageBox.Show(string.Format(Context.API.GetTranslation("plugin_pluginsmanager_install_unknown_source_warning"), 
+                                                        Environment.NewLine), 
+                                                Context.API.GetTranslation("plugin_pluginsmanager_install_unknown_source_warning_title"),
+                                                MessageBoxButton.YesNo) == MessageBoxResult.No)
+                            return false;
+                    }
+
                     Application.Current.MainWindow.Hide();
                     _ = InstallOrUpdate(plugin);
+                    
                     return ShouldHideWindow;
                 }
             };
 
             return new List<Result> { result };
         }
-        
+
+        private bool InstallSourceKnown(string url)
+        {
+            var author = url.Split('/')[3];
+            var acceptedSource = "https://github.com";
+            var contructedUrlPart = string.Format("{0}/{1}/", acceptedSource, author);
+
+            return url.StartsWith(acceptedSource) && Context.API.GetAllPlugins().Any(x => x.Metadata.Website.StartsWith(contructedUrlPart));
+        }
+
         internal async ValueTask<List<Result>> RequestInstallOrUpdate(string searchName, CancellationToken token)
         {
             if (!PluginsManifest.UserPlugins.Any())
@@ -370,7 +385,7 @@ namespace Flow.Launcher.Plugin.PluginsManager
 
             token.ThrowIfCancellationRequested();
 
-            var searchNameWithoutKeyword = searchName.Replace(Settings.HotKeyInstall, string.Empty).Trim();
+            var searchNameWithoutKeyword = searchName.Replace(Settings.HotKeyInstall, string.Empty, StringComparison.OrdinalIgnoreCase).Trim();
 
             if (Uri.IsWellFormedUriString(searchNameWithoutKeyword, UriKind.Absolute) 
                 && searchNameWithoutKeyword.Split('.').Last() == zip)
@@ -468,7 +483,7 @@ namespace Flow.Launcher.Plugin.PluginsManager
             if (autocompletedResults.Any())
                 return autocompletedResults;
 
-            var uninstallSearch = search.Replace(Settings.HotkeyUninstall, string.Empty).TrimStart();
+            var uninstallSearch = search.Replace(Settings.HotkeyUninstall, string.Empty, StringComparison.OrdinalIgnoreCase).TrimStart();
 
             var results = Context.API
                 .GetAllPlugins()
diff --git a/Plugins/Flow.Launcher.Plugin.PluginsManager/Settings.cs b/Plugins/Flow.Launcher.Plugin.PluginsManager/Settings.cs
index 9c5b0d29f..a951010c0 100644
--- a/Plugins/Flow.Launcher.Plugin.PluginsManager/Settings.cs
+++ b/Plugins/Flow.Launcher.Plugin.PluginsManager/Settings.cs
@@ -7,8 +7,11 @@ namespace Flow.Launcher.Plugin.PluginsManager
     internal class Settings
     {
         internal string HotKeyInstall { get; set; } = "install";
+
         internal string HotkeyUninstall { get; set; } = "uninstall";
 
         internal string HotkeyUpdate { get; set; } = "update";
+
+        public bool WarnFromUnknownSource { get; set; } = true;
     }
 }
diff --git a/Plugins/Flow.Launcher.Plugin.PluginsManager/ViewModels/SettingsViewModel.cs b/Plugins/Flow.Launcher.Plugin.PluginsManager/ViewModels/SettingsViewModel.cs
index 8ca4c614a..11303f472 100644
--- a/Plugins/Flow.Launcher.Plugin.PluginsManager/ViewModels/SettingsViewModel.cs
+++ b/Plugins/Flow.Launcher.Plugin.PluginsManager/ViewModels/SettingsViewModel.cs
@@ -14,5 +14,11 @@ namespace Flow.Launcher.Plugin.PluginsManager.ViewModels
             Context = context;
             Settings = settings;
         }
+
+        public bool WarnFromUnknownSource 
+        {
+            get => Settings.WarnFromUnknownSource;
+            set => Settings.WarnFromUnknownSource = value;
+        }
     }
 }
diff --git a/Plugins/Flow.Launcher.Plugin.PluginsManager/Views/PluginsManagerSettings.xaml b/Plugins/Flow.Launcher.Plugin.PluginsManager/Views/PluginsManagerSettings.xaml
index 89d27f6ff..d75803066 100644
--- a/Plugins/Flow.Launcher.Plugin.PluginsManager/Views/PluginsManagerSettings.xaml
+++ b/Plugins/Flow.Launcher.Plugin.PluginsManager/Views/PluginsManagerSettings.xaml
@@ -3,10 +3,18 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:local="clr-namespace:Flow.Launcher.Plugin.PluginsManager.ViewModels"
         mc:Ignorable="d"
         d:DesignHeight="450" d:DesignWidth="800">
-    <Grid>
-        
+    <Grid Margin="70 15 0 15">
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="250"/>
+            <ColumnDefinition Width="*"/>
+        </Grid.ColumnDefinitions>
+
+        <TextBlock Grid.Column="0" 
+                   Text="{DynamicResource plugin_pluginsmanager_plugin_settings_unknown_source}" 
+                   VerticalAlignment="Center" 
+                   FontSize="14"/>
+        <CheckBox Grid.Column="1" IsChecked="{Binding WarnFromUnknownSource}" />
     </Grid>
 </UserControl>
diff --git a/Plugins/Flow.Launcher.Plugin.PluginsManager/Views/PluginsManagerSettings.xaml.cs b/Plugins/Flow.Launcher.Plugin.PluginsManager/Views/PluginsManagerSettings.xaml.cs
index 703682e07..26668cc05 100644
--- a/Plugins/Flow.Launcher.Plugin.PluginsManager/Views/PluginsManagerSettings.xaml.cs
+++ b/Plugins/Flow.Launcher.Plugin.PluginsManager/Views/PluginsManagerSettings.xaml.cs
@@ -16,7 +16,7 @@ namespace Flow.Launcher.Plugin.PluginsManager.Views
 
             this.viewModel = viewModel;
 
-            //RefreshView();
+            this.DataContext = viewModel;
         }
     }
 }