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This review first appeared in issue 355 of PC Pro.
SMBs that are worried about file-sharing security and privacy can rest easy with Tresorit. A great feature of this cloud service is its zero-knowledge policy, which delivers end-to-end AES-256 encryption, and the company never stores keys or passwords, so only account holders and users have access to their data.
Tresorit is good value, and it’s commendable that its prices haven’t increased for over four years, with the Business Plus plan on review holding steady at £12.83 per user per month when billed yearly. This is a good choice for SMBs: it takes all the features of the Standard plan and doubles cloud storage per user to 2TB, trebles the maximum single file size to 15GB and offers a 100 file-version history.
Along with file sharing, syncing, user and group management, and Outlook, Outlook 365 and Gmail integration, it enables custom portal branding and access audit logs. A choice of 12 global data center locations is also available for businesses concerned about data residency jurisdiction.
Deployment is swift. You use the Tresorit Admin Center to email invitations to your users and, when they click on the message link, they can create an account and choose a password. You don’t need to worry about users forgetting it as the Advanced Control feature includes password reset services.
Once users have downloaded the desktop app, it will create a personal “Tresor” – Tresorit’s name for a secure, encrypted folder. You can have an unlimited number of Tresors up to your storage limit, and the app also creates a quick-access Windows Explorer drive mapping or a macOS Finder favorites folder.
Users can share their Tresors with selected team members by choosing them from the desktop app contact list and setting manage, edit or view-only permissions. Two types of Tresors are supported: the entire contents of classic folders can be shared, while next-gen folders allow specific sub-folders within them to be shared.
Tresorit has brought next-gen features in line with classic folders as you can now create and email links to share their files and sub-folders. You can also use encrypted links to place files requested from external partners, including those without a Tresorit account, in next-gen folders.
Integration with third-party apps has also seen improvements. Tresorit now works directly with Microsoft Teams, and we used our Teams Admin console to decide which users could install the Tresorit add-in on their Teams desktop app. Once logged in, they were able to access and share selected Tresors with other Teams users, upload or download files and create file requests, all from their Teams app.
Users can access the optional eSign digital signature service from both the Teams and Tresorit apps. Costing £45 per month for 100 signatures, you create an eSign request, select a PDF file and email it. Tresorit users can digitally sign the document with one click, while external users confirm their email address, enter the six-digit verification code provided and then sign the document.
Security features are extensive, with Admin Center policies controlling everything users are allowed to do. You can decide what types of devices they can access their account from, stop users from permanently deleting content, block their browsers from storing login details, use IP filtering to limit access from specific locations, enable single sign-on (SSO) and enforce two-factor authentication (2FA).
Tresorit doesn’t offer the same levels of integration with third-party apps as many rivals, but it rises to the top with its strict zero-knowledge encryption policy. Excellent value and ease of use make it a great choice for SMBs with cloud file-sharing security at the top of their agenda.
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