Back up, access & share your most
valuable files, securely

Tresorit is the most secure way to store and share files in the cloud. No Tresorit admin, hacker or government can access the data you store. Hacking just one file would take a lifetime.

Tresorit uses “end-to-end encryption” to guarantee the security of the uploaded file. Your files are encrypted before they leave your device and remain fully encrypted until they reach the recipient. Only you have the keys to open or share them.

Secure services are usually a pain to use, but Tresorit's ease of use has been praised by Forbes, PCWorld and thousands of users. Our ratings on all app stores rival those of Dropbox.

Tresorit's Headquarter is in Switzerland. User data is protected by Swiss privacy laws, which are stricter than those in the USA, and even in the European Union. Our R&D center is in Budapest, Hungary. Partner offices are located in the UK, the US, and around the world.

Tresorit runs on multiple Microsoft Azure datacenters located in the European Union (Ireland and the Netherlands).

Tresorit encrypts every file and relevant metadata on your devices with unique, randomly generated encryption keys. These keys are never stored in unencrypted form on the cloud. Accessing files is only possible with a user’s unique private decryption key.

Tresorit does not store your password, only a salted hash format, which we can authenticate you with. As Tresorit never has access to your password in unencrypted form, even if our servers were hacked, your account would be safe from harm.

Tresorit is available on Windows, Mac, Linux, Android, iOS, Windows Phone and Blackberry devices, and you can also access our service from any web browser.

Tresorit allows you to turn your local folders, and the files in them, into tresors – encrypted folders in the cloud. Changes to files are automatically synced between your local folder, and any devices on which you have installed Tresorit or where tresors are being shared. If you don't want to synchronize a folder to your device, you can also create 'cloud-only' tresors within the Tresorit applications, and upload folders or files into it.

You will receive notification of any changes on desktop devices

You can also open the Activity Wall of a tresor to see changes and, for a detailed audit trail export the Activity Wall history to a .csv file.

There are no accidental overwrites when two people modify the same file at the same time. Tresorit automatically detects the overlapping modifications and gives you the chance to review and resolve the conflict.

To access older versions of files, right click on the file in the Tresorit cloud browser and select See Versions. With Tresorit for Business an unlimited number of versions are stored and without impacting user storage limits.

Dropbox, Box, Google Drive and others claim that data is “safe” with them, but they don’t protect your files the way we do.

They may encrypt your data but they have the encryption key and the files get decrypted on their servers every time they are accessed.

Their administrators can see your files, and so can anyone who manages to gain access to their systems. Learn more how Tresorit security compares to others on Tresorit Comparison Page.

Dropbox became popular years ago, when data security threats were not as prevalent as they are today. And when it comes to security, there are serious doubts about Dropbox.

Using Tresorit your files will be completely secure. End-to-end encryption means you hold the keys to your data. You have total control over shared documents.

Tresorit’s main difference compared to Dropbox, and other mainstream cloud storage services, is the ability to turn any folder on your device into a secure “tresor.” What this means is that you do not have to drag and drop files into a special sync folder. Instead, you can drag any folder from its existing location on your computer into the Tresorit app to “tresor it.” This is especially convenient if you’re digitally organized and you’d prefer not to rearrange your files into one sync-able folder.

Read more about why Tresorit is the #1 secure Dropbox alternative.

Only a few providers offer client-side file encryption. The most popular is SpiderOak. But, SpiderOak has two main flaws:

• It is universally hard to use. This is attested to by reviewers on major tech sites and app store reviews.
• It cuts corners when it comes to security.

Additionally, SpiderOak is not zero-knowledge when used on mobile devices or a web-browser. By using so-called convergent cryptography, they sacrifice confidentiality to save storage space. Convergent algorithms enable Spider Oak to determine when your content matches the content of others in the cloud. This can leak valuable information about you to outside observers. Read more about how Tresorit compares to SpiderOak.

Services like Sookasa, Viivo, BoxCryptor and Ncrypted cloud have three main disadvantages when compared to Tresorit:

• Your users need to use two different services for adequate security, which often leads to accidental mix-ups that reveal sensitive data – e.g. copying documents in or to the basic cloud storage folder instead of the encrypted one;
• As complete encrypted folders need to be downloaded before a single file can be accessed, there’s no way to share securely with someone who doesn’t have exactly the same bolt-on encryption setup. For example, you can’t share a Viivo encrypted folder with someone using Boxcryptor, even if you both use Dropbox for storage, so someone will need to change providers if you want to share securely;
• You need to pay for, and maintain, two services instead of one.

Tresorit encryption takes place in the background. There’s no margin of error, as users don’t have to lift a finger. It’s also easy to share files securely with others, even if they don’t use Tresorit.

Setting up encrypted email is tedious, and less tech-savvy users may struggle to set it up correctly.

• Users need to download and install an app, create „public” and „private” encryption keys, then exchange the public ones with anyone they want to share files with.
• Even after setup is complete, emails and attachments need to be manually encrypted, and decrypted, one by one. This quickly gets in the way of business.
• It’s easy to get lost among different file versions and to waste hours updating a file someone else has already completed.

Once the Tresorit app is installed, the user can create an encrypted email attachment from any file on their computer – even if it’s not in a tresor. All the user has to do is right click the file (or a compressed file) that they wish to send as a secure attachment. Tresorit prepares the link – allowing users to set expiration date and download limits – and places it in the Link folder from where it can be fired off as an email attachment.

You will only be charged if you don't cancel your Tresorit subscription before the end of your trial. You get full access to Tresorit features throughout the trial. You can cancel anytime. If you forget to cancel your trial subscription before it would expire, but you do not wish to continue using Tresorit, you're eligible for a full refund of the amount you have been charged with within 7 days.

You can use PayPal, VISA, Mastercard, and American Express credit and debit cards for payments in Euros (EUR), Swiss Francs (CHF), US Dollars (USD), or British Pounds (GBP). If you need another solution (paying by Bank transfer), please contact us at sales@tresorit.com

If you wish to continue with Tresorit, you don’t need to do anything, your account will automatically transferred to a paying subscription.

You will be switched to Tresorit Basic. Your data will be retained, but if you have more data than 3GB, you won't be able to sync files until you free up some space.

If you forget to cancel your trial subscription before it would expire, but you do not wish to continue using Tresorit, you're eligible for a full refund of the amount you have been charged with within 7 days.

We ask for your credit card so that the transition will be smooth for you when the trial is over. Don’t worry, you can cancel during the free trial period and no charge will be applied to your card. Also, if you forget to cancel your trial subscription before it would expire, but you do not wish to continue using Tresorit, you're eligible for a full refund of the amount you have been charged with within 7 days.

Please consider payments with PayPal. If this is not possible, please contact our Sales Team with your request for the trial, and in case of serious interest we might be able to set up a trial account for you. Also, for transactions over €500, you can pay by wire transfer.

No, but VAT is applied in certain cases.

• If you are from an EU member country, your local VAT applies, unless you provide us with a VAT number during subscription, in which case no VAT is applied.
• If you are not from a member country of the European Union, you won't have to pay VAT.
• If you are from Switzerland, a fixed, 8% VAT applies.

You will receive a Tresorit invoice for each billing period (monthly or annual). Our invoices are clear, complete and transparent and you will be able to see exactly what you are paying for. Learn more about invoices here.