Tresorit is a Swiss company providing end-to-end encrypted cloud storage and secure content collaboration services.[1][2]
Founded in 2011, the company primarily serves businesses and organizations with elevated data protection and compliance requirements. Since 2021, Tresorit has been part of Swiss Post's digital business services, which, under the name 'Swiss Post Digital'[3] offer secure communication platforms and connectable software solutions for SMEs, public authorities, and the healthcare sector, among others. [4]
History
Tresorit was founded in 2011 by Hungarian software developers Istvan Lam, Szilveszter Szebeni and Gyorgy Szilagyi with the aim of providing a secure alternative to traditional cloud storage solutions. The company developed a cloud collaboration platform based on client-side end-to-end encryption and a zero-knowledge architecture. [5]
In its early years, Tresorit gained attention through a public security challenge inviting researchers to attempt to compromise its encryption system. The initiative received coverage in technology and cybersecurity media.[6]
The company initially positioned itself as a secure alternative to conventional cloud storage services and gradually expanded its offering toward enterprise-focused collaboration tools.
In 2021, Swiss Post Communications Services acquired a majority stake in Tresorit.[7] The company is now part of Swiss Post, and continues to operate independently within Swiss Post’s digital division, while benefiting from the broader infrastructure and institutional framework of its parent organization.
Tresorit has offices in Zurich, Munich, and Budapest.
Products and Services
Tresorit provides a cloud-based platform for secure file storage and collaboration. Its services include encrypted file sharing, email encryption, electronic signatures, and encrypted data rooms for managing sensitive documents and workflows.
The platform is available on Windows, macOS, Linux, Android, and iOS.
Technology
Tresorit uses client-side end-to-end encryption based on a zero-knowledge model. Files are encrypted on the user’s device before being uploaded to company servers.[8]
According to the company, encryption keys remain under user control, meaning that Tresorit and third parties cannot access the content of stored files.[9]
Security challenge
Between 2013 and 2014, Tresorit organized a public challenge inviting security researchers to attempt to compromise the service's encryption implementation. The challenge received coverage in technology and cybersecurity media.[10]
Acquisition by Swiss Post
In 2021, Swiss Post Communications Services acquired a majority stake in Tresorit as part of Swiss Post’s broader digital services strategy.[11]
Reception
Tresorit has been covered by international technology and business publications in the context of secure cloud storage and encrypted collaboration services.
TechCrunch described the company as an early European provider of end-to-end encrypted cloud services, while The New York Times included it in discussions of secure file-sharing tools.[12]
Other publications such as TechRadar and ITPro have reviewed Tresorit in the context of enterprise security and confidential data handling. [13]
See also
References
- ^ Pickavance, Mark; Nield, David (21 May 2020). "Tresorit cloud storage review". TechRadar. Retrieved 17 December 2021.
- ^ Sablah, Wisdom (3 August 2021). "Tresorit cloud storage review 2021". ITProPortal. Retrieved 17 December 2021.
- ^ https://www.post.ch/en/about-us/profile/digital-services
- ^ url=https://techcrunch.com/2021/07/08/swiss-post-acquires-e2e-encrypted-cloud-services-provider-tresorit
- ^ Kepes, Ben. "Tresorit Launches Its Secure Sync And Share Product For Business". Forbes. Retrieved 15 May 2026.
- ^ "Secure cloud storage outfit Tresorit posts $10K hacker bounty – Tech News and Analysis". Gigaom.com. 11 April 2013. Archived from the original on 13 April 2013. Retrieved 18 June 2013.
- ^ Lomas, Natasha (8 July 2021). "Swiss Post acquires e2e encrypted cloud services provider, Tresorit". TechCrunch. Retrieved 17 July 2026.
- ^ "Hands on: I tried Tresorit Business Plus - see what this file-sharing service actually delivers". TechRadar. 24 February 2025. Retrieved 17 July 2026.
- ^ "Tresorit Encryption White Paper" (PDF). Tresorit.
- ^ "Encrypted Cloud Startup Tresorit Reveals Pricing, Challenges Hackers To Break Their Service For $25,000". Dark Reading. Retrieved 17 July 2026.
- ^ Lomas, Natasha (8 July 2021). "Swiss Post acquires e2e encrypted cloud services provider, Tresorit". TechCrunch. Retrieved 16 June 2026.
- ^ Lomas, Natasha (8 July 2021). "Swiss Post acquires e2e encrypted cloud services provider, Tresorit". TechCrunch. Retrieved 30 January 2024.
- ^ https://www.itpro.com/cloud/cloud-security/370218/tresorit-business-standard-review-a-great-choice-for-small-businesses
