T
Tresorit
Cybersecurity · Zurich, Switzerland · Founded 2011
An end-to-end encrypted, zero-knowledge content collaboration platform MoreLess
Tresorit, established in 2011, operates in the cloud storage and collaboration market with a sharp focus on security. The company was founded by Istvan Lam, Szilveszter Szebeni, and Gyorgy Szilagyi, who leveraged their backgrounds in cryptography and data security to address vulnerabilities they perceived in mainstream cloud services. Lam, who serves as the CEO, previously engaged in cryptography research at the Budapest University of Technology and Economics, which formed the intellectual bedrock of the company.
The firm provides a suite of end-to-end encrypted productivity tools designed for businesses to manage, store, and transfer sensitive files. Tresorit's business model is primarily subscription-based, offering various tiers of service to a client base that spans over 10,000 businesses globally. These clients range from small teams to large enterprises in sectors like legal, healthcare, and finance, where data confidentiality is paramount. Revenue is generated through recurring fees for its secure collaboration platform. A significant milestone in the company's trajectory was its acquisition by Swiss Post in 2021, a move that allowed Tresorit to expand its market presence while retaining its brand and operational autonomy.
The core of Tresorit's offering is its 'zero-knowledge' end-to-end encryption, which ensures that only the user and those they authorize can access the content of their files; not even Tresorit's own administrators can view the data. This is a key differentiator from many competitors. The platform includes features such as secure file sharing with granular access controls, password-protected links, and detailed activity logs for administrators. Its e-signature solution, Tresorit eSign, allows for the legally binding signing of documents within the same secure environment. The service is designed to integrate into existing workflows, aiming to provide a high level of security without compromising user productivity.
Keywords: cloud security, end-to-end encryption, secure collaboration, file sharing, data privacy, zero-knowledge, cybersecurity, information security, data protection, enterprise software
Company overview
Tresorit company information
The essential company record, classifications and operating signals in one place.
- Status
- Acquired
- Founded
- 2011
- Headquarters
- Zurich, Switzerland
- Employees
- 144
- Open positions
- 7
- Dealroom signal
- 76.2
Valuation & funding
Tresorit funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| ACQUISITION✓Exit | Jul 2021 | $0 | — | Swiss Post | — |
| SERIES B✓Equity / VC | Sep 2018 | $13M | $51M | PortfoLion · Andreas Kemi · Marton Anka · 3TS Capital Partners | ↗ |
| EARLY VC✓Equity / VC | Apr 2017 | $0 | — | Marton Anka | — |
| SERIES A✓Equity / VC | May 2014 | $3M | $12M | Euroventures | ↗ |
| EARLY VC✓Equity / VC | Jan 2012 | $1.7M | $6.8M | Euroventures | ↗ |
Financials
Revenue, earnings and profit over time
Reported history and available estimates. Estimated years are marked “E”; sparse fields are left blank rather than inferred.
Growth signals
Tresorit website traffic
Latest recorded traffic for Tresorit is 330K monthly website visits, up 13.8% over the last three months. Tresorit's team grew 8.3% over the past year.
Hiring
Open positions at Tresorit
Current openings linked to this company in Dealroom.
Comparisons
Tresorit compared with similar companies
Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.
| Company | Headquarters | Status | Employees | Total funding | Valuation |
|---|---|---|---|---|---|
CipherCloudLeading provider of cloud information protection solutions |
San Jose, United States | Acquired | 144 | $80M | $200M |
MedStackAutomated, inheritable, provable data privacy security compliance for digital health apps |
Toronto, Canada | Operational | |||
Spin.aiSpinbackup is a robust solution that allows organizations to have the ability to backup, protect, and secure SaaS data |
Palo Alto, United States | Operational | |||
CoroPowerful defense for your users, devices, email, cloud apps, and data |
Chicago, United States | Operational | |||
VaultiveCloud Data Encryption Solution |
Tel Aviv-Yafo, Israel | Acquired | |||
Palo Alto NetworksGlobal cybersecurity company delivering a unified platform of network, cloud and endpoint protection |
Santa Clara, United States | Operational | |||
NutanixHybrid multicloud platform for applications and data |
Seattle, United States | Operational | |||
SysdigA unified cloud-native visibility and security platform |
San Francisco, United States | Operational |
Talent graph
Tresorit's talent
Source: Dealroom Talent Intelligence.
Investors
11 investors on Tresorit's cap table
Sourced from Dealroom's funding and investor records.











Global footprint
Where Tresorit has talent and traffic
team presence
In the news
Latest news about Tresorit
Recent press, funding announcements, and product moves mentioning Tresorit — open to read from the original sources.
Market sentiment
What the market is saying about Tresorit
An AI-synthesized read of the highest-engagement posts about Tresorit on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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