"The cloud," you've probably heard about it by now. It's this vast intangible place where you can put things. Things like emails and notes and files. But you've probably also heard about how vulnerable stuff in the cloud is and about how nefarious hackers can hijack your accounts to do terrible, terrible things with your data. Well, for the paranoid out there, iTwin is offering SecureBox, a hardware-based encryption system that can sync up with your Dropbox account. After plugging in your iTwin key you'll be presented with the SecureBox folder -- simply drag and drop your files there and they'll be encrypted and uploaded. To view them again you'll need one half of the iTwin and the AES 256-bit encryption key it contains. If you're looking for even more security you can add an optional password, adding two-factor authentication to your SecureBox, which already lives behind DropBox's own two-factor authentication system. You can pick up an iTwin yourself at the source for $99 or download the feature as a software update if you already have the prerequisite USB key.