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CUNICULA

Proton Drive

Swiss end-to-end encrypted cloud storage encrypting file contents, filenames and folder names before upload.

proton.me

Swiss end-to-end encrypted cloud storage encrypting file contents, filenames and folder names before upload.

Common useCloud StorageCloud StorageOperator dataHosted
Identity checksZero KYCNo document check recorded · identity exposure level 0/4
Evidence and riskVerified evidenceCautionMaterial claims checked against current sources.; those sources show trade-offs worth reading.
Last reviewedReviewed 22 Jun 2026KYC checked 22 Jun 2026 · verified jurisdiction · Source → official siteHow to cite this pageEvidence confidence94/100
Evidence and facts

Evidence and facts

JURISDICTIONCH
CAUTIONSame Proton AG compliance surface as Proton Mail. Drive encrypts file contents and names client-side, but account, billing, sharing and legal-request metadata remain outside file encryption.
AUDITED BYSecuritum
OPERATOR DATAHosted operator recorded
EVIDENCE CONFIDENCE
INDEPENDENT AUDIT1/11
Why evidence is 94/100Formula 3.1
Source coverageMaterial claims checked against current sources
+70
Review ageOldest recorded check is 62 days old
+24

Full scoring method

LAST CHECKED2026-06-24
LAST UPDATED2026-06-22

Specs

DOCUMENT CHECKNone recorded
IDENTITY EXPOSURELevel 0/4
KYC TRIGGERSNo Drive-specific identity KYC found. Use requires a Proton account, so account, abuse-prevention and billing metadata from the wider Proton service still apply.
FEEFree 1GB / from $3.99/mo
CATEGORIESCloud Storage
FEATURESEnd-to-end encrypted, Zero-access encryption, Anonymous account, Swiss jurisdiction, BTC payment, Integrated with Proton suite, Open source
TORNot listed
REGIONSGlobal availability
Review analysis, source material, related services, and history

Analysis

OVERVIEW

Proton Drive encrypts file contents and filenames client-side under Proton's zero-access model, accepts Bitcoin payment, and carries the same Securitum audit history as the wider Proton AG suite.

LIMITS

Proton Drive requires a Proton account, so the 2021 Swiss court order that led Proton Mail to log an IP address applies to the same compliance surface, and account, billing, sharing and legal-request metadata sit outside the file-level encryption.

USEFUL FOR

Existing or prospective Proton users wanting client-side encrypted storage who accept the account layer's shared compliance history.

Sources · reviewed 2026-07-16

Corporate identity

Registry-sourced, not audited. The facts below come from cited web research rather than a direct registry query. Each claim links its own source.

LEGAL ENTITY
Proton AGsource ↗
REGISTRATION NO.
CHE-354.686.492source ↗
INCORPORATED IN
Switzerlandsource ↗
INCORPORATED ON
18 July 2014source ↗
REGISTERED ADDRESS
Route de la Galaise 32, 1228 Plan-les-Ouates, Geneva, Switzerlandsource ↗
ULTIMATE OWNER
Proton Foundationsource ↗
PREVIOUSLY TRADED AS
  • Proton Technologies AG
source ↗
Registry research · reviewed 2026-08-08

Ownership chain

Who owns the operator, read from the public register. Each step says what kind of evidence it rests on: a registry record can be checked, a company statement cannot.

  1. OPERATORProton AGCHE-354.686.492 · Switzerland
  2. PRINCIPAL SHAREHOLDERFondation ProtonCHE-418.863.304 · SwitzerlandCOMPANY STATEMENT

    As Proton's primary shareholder, the foundation exercises its control to ensure that Proton does not deviate from our mission. No change of control of Proton can occur without the consent of the Foundation.

    Both entities are registry-confirmed, but the shareholding between them is not. Swiss law does not require a company to publish its shareholders, so this edge rests on Proton's own account of its governance and cannot be checked against Zefix.

    Proton Foundation governance page

The chain stops here because the register stops, not because the top was reached. Swiss and Swedish companies do not publish their shareholders, and a Czech joint-stock company does not list its own. Nothing above the last step should be assumed either way.

SAME OPERATOR

Proton AG also runs 3 other services shown here. Comparing them compares products, not independent companies.

WHAT IT USED TO BE
  • Proton Technologies AGrenamed 2021-09-30REGISTRY RECORD

    Renamed by the same legal person, not a new company. The Swiss Official Gazette entry of 18.10.2021 reads 'Nouvelle raison sociale: Proton AG', with the statutes modified on 30.09.2021. The UID is unchanged either side of the rename, which is what proves it is one entity.

  • ProtonVPN AGabsorbed 2020-06-30REGISTRY RECORD

    Recorded on both sides of the register: Proton AG lists ProtonVPN AG under companies taken over, and the ProtonVPN AG record names Proton AG as the entity that took it over. The VPN product has had no separate company since.

Frequently Asked Questions

Is identity verification required?

No identity verification is recorded for typical use. No Drive-specific identity KYC found. Use requires a Proton account, so account, abuse-prevention and billing metadata from the wider Proton service still apply.

Which payment methods are accepted?

Please check the provider site for accepted payment methods.

Where is it available?

Recorded availability: GLOBAL.

Is the operator based in a Five Eyes country?

No. The recorded jurisdiction is CH, which is not a Five Eyes country. This is jurisdiction context and does not by itself establish that a service is safer or less safe.

How are identity, operator, and evidence fields reported?

Identity exposure is level 0 of 4. A hosted operator is recorded. Jurisdiction is shown as context, not a safety verdict. Evidence confidence is 94/100 and recorded risk is caution.

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Sources and history

Terms and privacy policy

No changes to the documents we watch since we started checking on 9 Aug 2026. Last checked 9 Aug 2026.

Evidence basis: Claims on this page are linked to published sources for comparison, not certification, audit, endorsement, or recommendation; read the methodology and coverage map before relying on an entry.