Tresorit’s Super Secure Online File Storage

The big news in technology these days is “the cloud.” In fact, the cloud offers many different services but the most common one for consumers is file storage. Companies like Dropbox, Google Drive, SugarSync, OneDrive, and others provide off-site backup services and also allow users to access their own files on desktop, laptop, and tablet computers or even on cell phones. The file storage business has skyrocketed in the past 2 or 3 years as consumers have learned how useful such services can be.

Many consumers are reluctant to trust these services, however. Real and imagined security concerns have made many people slow to adopt file storage technology. Most of the concerns revolve around access to personal information by hackers as well as by government hackers and by anyone outside the government who wishes to steal personal information and identities. Experience has proven that any file storage service in the U.S. will quickly provide any and all personal information to any law enforcement officer who shows up at the company’s door with a court order. That willingness to share is a valid concern for anyone who values privacy.

One company solves the problem. That company’s product encrypts all data on the consumers computer BEFORE it is sent to the company’s servers. Nobody, not even the company’s own employees, can read your data. In addition, the company is based in Switzerland and has all of its servers in that country or in the European Union. Both Switzerland and the European Union have very strong laws about protecting the privacy of individuals. Swiss laws forbid the release of personal information to any government agency, not even to the Swiss government. A court order from a US court is useless in Switzerland and in the European Union when the data is stored on servers there.

Tresorit_LogoThat company has the strange name of Tresorit.

Tresorit is incorporated in Switzerland and operates under Swiss laws, not under US laws and government edicts. Tresorit provides client-side security on all devices. The company is so confident of its security that it has offered a $50,000 prize to anyone who can hack in and obtain any private data from Tresorit’s servers. More than 1000 hackers have registered for the challenge and attempted to break Tresorit’s security to win $50,000. So far, no one has succeeded.

With Tresorit’s client software installed in your computer, tablet, or cell phone, you can edit and save any files, not just access files on your mobile devices. Information stored in the company’s servers is “zero-knowledge.” According to the Tresorit web site at

“Tresorit’s client-side encryption technology secures your files on your device with some of the highest grade encryption methods available and your files can’t be decrypted in the cloud. This makes them safer than “safe”. No one else has the decryption key, not even Tresorit administrators. Only you and those who you share with have access.”

The files are encrypted not only when on Tresorit’s servers, but even when being sent across the Internet to and from those servers. Quoting the web site again:

“Tresorit sends files to the server with TLS, the successor to SSL. In addition to that, by using client side encryption first, your data enjoys another level of security, preventing even the slightest chance of spying on files during transfer.”

You can learn a lot more about Tesorit’s cryptographic protection at

Tresorit software is available for Windows, Macintosh, Linux, Apple iOS, Android, Windows Phone and Blackberry. Files uploaded with any version of Tresorit software can later be retrieved and read by any other version of Tresorit software. Unlike some other encrypted file storage services, the Tresorit softare is very easy to use. You can see a side-by-side comparison of Tesorit’s services versus its major competitors at

Tresorit charges $12.50 a month for up to 100 gigabytes of encrypted file storage space. (A free trial is also available.) Payment of $20 a month per user provides up to one terabyte of encrypted storage space to be shared and files can even edited by multiple users if the administrator gives the other users the required permissions. An Enterprise edition is available for corporations as well. Tresorit also provides a free service that will store up to 3 gigabytes of data but provides only limited file sharing capabilities. I suspect anyone who tries the free Tresorit Basic will soon upgrade to the $12.50 a month Premium version.

Tresorit is based in Switzerland but accepts payments US dollars, Euros, and in British Pounds (GBP).

What level of protection do you want for YOUR personal files?

Tresorit provides industrial-grade security and protection for all your files, even the most sensitive ones. Unlike US-based file storage providers, files stored in Tesorit’s servers will never be exposed to others, even if a court order is issued. You can learn more about Tresorit at

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