--- sudo-1.6.8p12/sudoers.tty	2006-05-29 14:40:18.000000000 +0200
+++ sudo-1.6.8p12/sudoers	2006-05-29 14:46:37.000000000 +0200
@@ -13,6 +13,8 @@
 
 # Defaults specification
 
+Defaults    requiretty
+
 Defaults    env_reset
 Defaults    env_keep = "COLORS DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR \
                         LS_COLORS MAIL PS1 PS2 QTDIR USERNAME \