(MoneyWatch) 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 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.
Earlier this year, Tresorit issued a $25,000 hacker challenge, but no one was able to compromise the company's cloud.
In addition to the appeal of high grade security, Tresorit has a flexible model for syncing with your local drive, not entirely unlike Cubby. In addition to the ability to sync files in a general Tresorit folder, you can convert any folder on your PC into a Tresorit folder, which means you don't need to change the way you manage your files just to keep a copy in the cloud. And if you need additional space, Tresorit has additional plans that start at $13/month for 100GB of space. One downside: Tresorit limits the maximum size of individual files. The free plan throttles you to no file in excess of 500MB; paid services bump that limit up to 2GB.
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. Specifically, there's 500MB for every person who accepts your invite.
To take advantage of Tresorit's generous storage offer, get started and create an account on the Tresorit web site.