I have been an EN user since Beta, and became a Premium user as soon as it was offered. I, too, would like the ability to encrypt an entire notebook. This really should be as easy as a Right-Click or selection in properties for a Notebook. I saw above where it says a user can already encrypt an entire note. The only was I can see to do that is to select all of the text/images in the note and then encrypt. IS there a simple one step alternative? As with others above, I would be willing to pay a few bucks extra a year for this additional encryption ability. Seems this should be a no-brainier for EN, both as a tech matter and as a business/profit matter.