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Secure document exchange for banks & financial institutions

Client documents your vendor can't read

Loan files, KYC packets, claims documents, audit requests - the documents a financial institution exchanges are exactly what attackers and accidents go looking for. GCN.ONE encrypts every document in the browser before upload, so what reaches our servers is ciphertext we cannot read, and records a cryptographically signed delivery certificate when your recipient collects it.

Send a file now - no signup form See pricing
Email is where financial documents leak

Business email compromise feeds on financial attachments: statements, payout details and identity documents travel readable through relays neither you nor your client controls, and sit in mailboxes forever. Every mis-sent attachment is a reportable incident and a client-trust problem.

Client portals solve part of that, but they are heavy to roll out, a burden for the counterparty - and most still leave the operator able to read what is inside. For document exchange, the safest operator is one that structurally cannot.

How it works in a regulated institution
1
Encrypt before anything leaves the desk
Documents are encrypted in the browser on the employee's machine before upload. Our servers only ever store ciphertext - there is no readable client data at the vendor to breach or leak.
2
Clients and counterparties collect securely
The client, auditor or counterparty opens a secure link and decrypts locally - no account or software required on their side. You are notified the moment the documents are opened and downloaded.
3
Keep evidence that stands on its own
For notices and deadline-critical documents, a cryptographically signed delivery certificate records what was delivered, to whom, and when - independently verifiable by anyone at our public Verify page.
Built for regulated document flows
Zero readable data at the vendor
End-to-end encryption in the browser: we cannot read files, filenames or messages - not for support, not under pressure. There is no master key.
Delivery you can prove
Signed, timestamped delivery certificates for the documents that end up in disputes - default notices, terminations, contractual deadlines.
Tamper-evident audit trail
Every transfer is recorded in a tamper-evident, publicly anchored audit log - the history cannot be quietly rewritten, by us or anyone else.
Nothing accumulates
Transfers expire automatically and the encrypted data is permanently deleted - no shadow archive of client documents building up at a third party.
Proof of delivery for notices that matter

When a notice has legal or financial consequences - a default notice, a termination, a deadline-bound offer - the delivery certificate records what was delivered, to whom, and exactly when, signed cryptographically so anyone can verify it at our public Verify page without having to trust us.

Behind it sits the tamper-evident, publicly anchored audit log: the record cannot be silently altered after the fact. Whether a specific statutory form of service applies in a given case is a question for the applicable law; we make no claim to be a qualified delivery service under eIDAS.

Built for your third-party risk review

All infrastructure runs in the European Union under EU jurisdiction, built to GDPR standards from the ground up. To be precise about the boundary: file contents, filenames and messages are encrypted client-side and unreadable to us; transfer metadata (sender, recipient, timestamps, sizes) is processed to operate the service. Minimal processing, structurally enforced - the boundary your outsourcing and data-protection assessments actually want to see.

Request our Data Processing Agreement (DPA)

Frequently asked questions

As a processor that holds only ciphertext and transfer metadata. We support your assessment with a DPA and full technical documentation of the encryption model; because the keys never reach us, the residual risk you are assessing is the metadata, not the documents.

Yes - that is what the delivery certificate is for. It records the delivery time under a cryptographic signature that anyone, including the counterparty, can verify independently at our public Verify page.

No. Clients open a secure link in their browser and decryption happens locally on their device. No registration, no installation - which matters when the recipient is a retail client.

Transfers expire on a schedule you can see when sending (selectable on subscription plans) and the encrypted data is permanently deleted. For recurring exchange - with an auditor, or per engagement - Shares provide longer-lived encrypted spaces with version history and member roles.
Put it in front of your risk team
Try a first encrypted transfer with a test document - a temporary account, gone in 3 days.
Send a file now - no signup form See pricing