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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

Valuation $0–100M
Revenue $1–10M
Headcount 100–500
Total funding $10–50M
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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
client focusb2bsub industryData protectionbusiness modelSaaSindustrySecuritysectorEncryptionsectorCloud SecuritysectorCloud StoragesectorRisk ManagementsectorCloud ComputingsectorDeveloper ToolssectorCybersecuritysectorNIÜsectoref tough tech maybeindustryEnterprise Software

Valuation & funding

Tresorit funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITIONExit Jul 2021 $0 Swiss Post
SERIES BEquity / VC Sep 2018 $13M $51M PortfoLion · Andreas Kemi · Marton Anka · 3TS Capital Partners
EARLY VCEquity / VC Apr 2017 $0 Marton Anka
SERIES AEquity / VC May 2014 $3M $12M Euroventures
EARLY VCEquity / VC Jan 2012 $1.7M $6.8M Euroventures
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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.

YearRevenueGrowthEBITDAMarginProfitMargin
2026 $8.4M 0% $1M 11.9% $65K 0.8%
2025 $8.4M 0% $1M 11.9% $65K 0.8%
2024 $8.4M 0% $1M 11.9% $65K 0.8%
2023 $8.4M 0% $1M 11.9%
2022 $8.4M +22.8% $1M 11.9%
2021 $6.8M -24.3% $107K 1.6%
2020 $9M −$29K -0.3%
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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.

Latest monthly visits330K 3-month web change+13.8% 1-year team growth+8.3%
Monthly website visits142 observations · Oct 2014–Jul 2026
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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.

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Talent graph

Tresorit's talent

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Team profiled 25 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 8 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

11 investors on Tresorit's cap table

Sourced from Dealroom's funding and investor records.

Series A 5 investors entered at this stage
Euroventures
Marton Anka
3TS Capital Partners
PortfoLion
Andreas Kemi
Other known 6 additional known investors
Swiss Post
Gyorgy Simo
Mark Palfalvi
Marton Szoke
Michael Altendorf
Trind Ventures

Global footprint

Where Tresorit has talent and traffic

Workforce by country
12 countries with
team presence
🇭🇺 Hungary83.3%
🇩🇪 Germany5.8%
🇨🇭 Switzerland2.5%
🇮🇳 India1.7%
🇷🇴 Romania0.8%
Top 5 of 12 shown

In the news

Latest news about Tresorit

Recent press, funding announcements, and product moves mentioning Tresorit — open to read from the original sources.

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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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