The way I view and use Evernote is this: Don't put anything unencrypted into Evernote that I consider sensitive. For sensitive documents I want in Evernote, I encrypt them first (like PDFs) Many PDF tools offer 128-bit encryption Adobe Acrobat X (and later) and other tools also offer 256-bit encryption, but you won't be able to view the PDFs inline. Finally, I am in the process of evaluating Wuala which provides highly encrypted Cloud storage that also can sync to your local files like DropBox. I use this approach too. I don't have many documents I consider too sensitive to hold in my EN cloud. If I want a protection layer on some file I use the documents original built in password protection (for ms-office documents or pdf's) or I compress it with encryption before uploading it to EN. I lose the possibility to find the note through search within the document but I can still find it by words in the description or tags etc. To minimize the risk of unauthorized access I use 2 factor authentication on my account and password protect my mobile devices. If someone wants to hack my EN and will invest enough effort I guess they could, but I don't have any top-secret information there as I usually keep the nuclear launch codes on a different system.