When ever I do use SUDO, I'm able to do without even asking passwords except first time even though I haven't applied any rule. All the rules you can see in the image are by default.Every time I open the file using SUDO VISUDO.
I want that each time while doing SUDO it should ask password.
Once I tried the same to do with Adding the rule to ask pass (see this image) but it wasn't working. SUDO just ask pass for the first time.
Is anything over-riding or what's actually happening?