Cloud storage services like Dropbox, Box, SkyDrive, and Cubby are convenient, both for making files available on multiple PCs and for sharing files with coworkers. But security concerns persist.
Some time ago, I told you about cloud storage contender
http://www.cbsnews.com/8301-505143_162-57580572/get-5gb-of-free-ultra-secure-storage/Tresorit, which claims military-grade AES-256 encryption further secured by TLS-protected channels. Tresorit claims that not only is your data ultra-secure from hackers, but the company itself has no ability to peer at the content of your uploads.
If the idea of secure online storage appeals to you, you'll be delighted to know that Tresorit is back this week with a new offer: As much as 32GB of free storage. You can now get not only 5GB of storage simply for creating an account, but another 5GB for installing the desktop client app for accessing your data on multiple PCs. And the real payoff comes from referrals: You can earn as much as 22.5GB by inviting others to sign up as well.