diff --git a/editor/editors.go b/editor/editors.go
index 8f611ae..09eaac6 100644
--- a/editor/editors.go
+++ b/editor/editors.go
@@ -38,6 +38,12 @@ import (
 // WSHandler handles request of creating editor channel.
 func WSHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if httpSession.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
+
 	sid := httpSession.Values["id"].(string)
 
 	conn, _ := websocket.Upgrade(w, r, nil, 1024, 1024)
@@ -102,6 +108,11 @@ func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	session, _ := session.HTTPSession.Get(r, "wide-session")
+	if session.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := session.Values["username"].(string)
 
 	path := args["path"].(string)
@@ -244,6 +255,11 @@ func FindDeclarationHandler(w http.ResponseWriter, r *http.Request) {
 	defer util.RetJSON(w, r, data)
 
 	session, _ := session.HTTPSession.Get(r, "wide-session")
+	if session.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := session.Values["username"].(string)
 
 	var args map[string]interface{}
@@ -323,6 +339,11 @@ func FindUsagesHandler(w http.ResponseWriter, r *http.Request) {
 	defer util.RetJSON(w, r, data)
 
 	session, _ := session.HTTPSession.Get(r, "wide-session")
+	if session.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := session.Values["username"].(string)
 
 	var args map[string]interface{}
diff --git a/editor/formatter.go b/editor/formatter.go
index a8031e0..945375b 100644
--- a/editor/formatter.go
+++ b/editor/formatter.go
@@ -36,6 +36,11 @@ func GoFmtHandler(w http.ResponseWriter, r *http.Request) {
 	defer util.RetJSON(w, r, data)
 
 	session, _ := session.HTTPSession.Get(r, "wide-session")
+	if session.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := session.Values["username"].(string)
 
 	var args map[string]interface{}
diff --git a/file/files.go b/file/files.go
index 7108632..163e644 100644
--- a/file/files.go
+++ b/file/files.go
@@ -72,8 +72,13 @@ func GetFiles(w http.ResponseWriter, r *http.Request) {
 	defer util.RetJSON(w, r, data)
 
 	session, _ := session.HTTPSession.Get(r, "wide-session")
+	if session.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
 
+		return
+	}
 	username := session.Values["username"].(string)
+
 	userWorkspace := conf.Wide.GetUserWorkspace(username)
 	workspaces := filepath.SplitList(userWorkspace)
 
@@ -341,7 +346,13 @@ func Find(w http.ResponseWriter, r *http.Request) {
 	name := args["name"].(string)
 
 	session, _ := session.HTTPSession.Get(r, "wide-session")
+	if session.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := session.Values["username"].(string)
+
 	userWorkspace := conf.Wide.GetUserWorkspace(username)
 	workspaces := filepath.SplitList(userWorkspace)
 
diff --git a/main.go b/main.go
index 74fc57e..75f3ab4 100644
--- a/main.go
+++ b/main.go
@@ -81,7 +81,6 @@ func init() {
 // indexHandler handles request of Wide index.
 func indexHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
-
 	if httpSession.IsNew {
 		http.Redirect(w, r, "/login", http.StatusFound)
 
@@ -138,7 +137,6 @@ func serveSingle(pattern string, filename string) {
 // startHandler handles request of start page.
 func startHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
-
 	if httpSession.IsNew {
 		http.Redirect(w, r, "/login", http.StatusFound)
 
@@ -176,7 +174,6 @@ func startHandler(w http.ResponseWriter, r *http.Request) {
 // keyboardShortcutsHandler handles request of keyboard shortcuts page.
 func keyboardShortcutsHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
-
 	if httpSession.IsNew {
 		http.Redirect(w, r, "/login", http.StatusFound)
 
@@ -206,7 +203,6 @@ func keyboardShortcutsHandler(w http.ResponseWriter, r *http.Request) {
 // aboutHandle handles request of about page.
 func aboutHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
-
 	if httpSession.IsNew {
 		http.Redirect(w, r, "/login", http.StatusFound)
 
diff --git a/output/outputs.go b/output/outputs.go
index 576259c..66e4f10 100644
--- a/output/outputs.go
+++ b/output/outputs.go
@@ -254,6 +254,11 @@ func BuildHandler(w http.ResponseWriter, r *http.Request) {
 	defer util.RetJSON(w, r, data)
 
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if httpSession.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := httpSession.Values["username"].(string)
 	locale := conf.Wide.GetUser(username).Locale
 
@@ -456,6 +461,11 @@ func GoTestHandler(w http.ResponseWriter, r *http.Request) {
 	defer util.RetJSON(w, r, data)
 
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if httpSession.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := httpSession.Values["username"].(string)
 	locale := conf.Wide.GetUser(username).Locale
 
@@ -569,6 +579,11 @@ func GoInstallHandler(w http.ResponseWriter, r *http.Request) {
 	defer util.RetJSON(w, r, data)
 
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if httpSession.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := httpSession.Values["username"].(string)
 	locale := conf.Wide.GetUser(username).Locale
 
@@ -729,6 +744,11 @@ func GoGetHandler(w http.ResponseWriter, r *http.Request) {
 	defer util.RetJSON(w, r, data)
 
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if httpSession.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := httpSession.Values["username"].(string)
 	locale := conf.Wide.GetUser(username).Locale
 
diff --git a/shell/shells.go b/shell/shells.go
index 1d0870c..83d773d 100644
--- a/shell/shells.go
+++ b/shell/shells.go
@@ -42,7 +42,6 @@ var ShellWS = map[string]*util.WSChannel{}
 // IndexHandler handles request of Shell index.
 func IndexHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
-
 	if httpSession.IsNew {
 		http.Redirect(w, r, "/login", http.StatusFound)
 
@@ -82,6 +81,11 @@ func IndexHandler(w http.ResponseWriter, r *http.Request) {
 // WSHandler handles request of creating Shell channel.
 func WSHandler(w http.ResponseWriter, r *http.Request) {
 	httpSession, _ := session.HTTPSession.Get(r, "wide-session")
+	if httpSession.IsNew {
+		http.Error(w, "Forbidden", http.StatusForbidden)
+
+		return
+	}
 	username := httpSession.Values["username"].(string)
 
 	sid := r.URL.Query()["sid"][0]