Tresorit is owned by Swiss Post, which acquired it in July 2021.

Where is Tresorit headquartered?

Tresorit is headquartered in Zurich, Switzerland.

Who is the CEO of Tresorit?

István Lám is the CEO of Tresorit.

Who founded Tresorit?

István Lám, Szilveszter Szebeni, and György Szilágyi are co-founders of Tresorit, founded in 2011.

What products does Tresorit sell?

Tresorit sells Tresorit SecureCloud.

Tresorit

Data ProtectionZurich, Switzerlandfounded 2011acquired by Swiss Posttresorit.com ↗

Tresorit is a cybersecurity company specializing in Data Protection, founded in 2011 and headquartered in Zurich, Switzerland. It has raised $17.78M in equity across 4 priced rounds, employs about 144 people, and was acquired by Swiss Post in 2021.

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updated Oct 30, 2026

Latest Tresorit news and company activity

What Tresorit did, dated — selected moves from the record, one per kind, newest first.

May 2026Customer winAMATAS boosts data security with Tresorit - a success story
Dec 2025RecognitionTresorit's security validated again by independent third-party auditor – 2025 pentest results
Sep 2025RecognitionTresorit achieves NIS2 compliance certification with outstanding results from Ernst & Young audit
Oct 2023RecognitionBest Cloud Storage for Business: Secure File Sharing in 2026

Tresorit Momentum score

42/ 100

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Tresorit products

Tresorit SecureCloudEncrypted cloud storage & collaboration platform with zero-knowledge E2EEDetails ↗

Tresorit funding

Tresorit has raised $17.78M in priced equity. Its most recent round was a Series B in December 2018. It has 4 funding rounds on record: Series A, Series A, Venture Round, and Series B. 5 investors are on record, including 3TS Capital Partners and PortfoLion.

Equity raised: $17.78M4 priced rounds
Last round: Series BDec 2018

View the complete funding history

Tresorit employees and hiring

As of September 2026, Tresorit has about 144 employees, with 6 open roles.

Employees: 144
30-day change: 0%
Open roles: 6

See hiring trends

Tresorit competitors

Competitors of Tresorit include Virtru. The full competitive set, with overlap scoring, is in the platform.

Virtru

ranked by CybersecTools comparison demand, 90 days

View the competitive set with overlap scores

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The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobs6 live postings, role mix
Tech stackframeworks, clouds, security
Competitorsfull set, overlap scored
Leadershipevery exec, with roles
Customersnamed publicly, with sources
Reviews & newssentiment, coverage, cadence

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Funding, round by round, with the investors
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The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobs6 live postings, role mix
Tech stackframeworks, clouds, security

Similar in Data Protection

Common questions about Tresorit.

How much funding has Tresorit raised?: Tresorit has raised $17.78M in priced equity. Its most recent round was a Series B in December 2018. It has 4 funding rounds on record: Series A, Series A, Venture Round, and Series B. 5 investors are on record, including 3TS Capital Partners and PortfoLion.
How many people work at Tresorit?: As of September 2026, Tresorit has about 144 employees, with 6 open roles.
Who owns Tresorit?: Tresorit is owned by Swiss Post, which acquired it in July 2021.
Where is Tresorit headquartered?: Tresorit is headquartered in Zurich, Switzerland.
Who is the CEO of Tresorit?: István Lám is the CEO of Tresorit.
Who founded Tresorit?: István Lám, Szilveszter Szebeni, and György Szilágyi are co-founders of Tresorit, founded in 2011.
Who are Tresorit's competitors?: Competitors of Tresorit include Virtru. The full competitive set, with overlap scoring, is in the platform.
What does Tresorit do?: Tresorit is a cybersecurity company specializing in Data Protection, founded in 2011 and headquartered in Zurich, Switzerland.