7 May 2026 · 6 min read
It's a fair question. Whether you're using AI document data extraction software or a general cloud platform, your contracts contain supplier pricing, payment terms, and sensitive obligations. Your invoices carry banking details and vendor relationships. Before uploading any of that to a cloud tool, you want to know where it goes, who can access it, and what happens to it afterwards.
This guide breaks it down in plain English — no technical jargon, just the six things worth checking before you upload anything confidential.
The instinct to be cautious is sensible. But the alternative — emailing documents around, saving them to shared drives, sending Google Drive links — carries its own risks. Unencrypted email isn't a secure channel. A shared drive link set to "anyone with the link" can be more exposed than a properly secured cloud platform.
The question isn't "cloud or no cloud." It's "which cloud tool, and how does it protect my data?"
Reputable cloud tools don't run their own servers in a back room. They use infrastructure provided by companies like Google, Amazon, or Microsoft — the same infrastructure used by banks, hospitals, and government agencies.
When a tool says it's "hosted on Google Cloud," that means your documents sit on Google's enterprise servers, which Google physically secures, maintains, and monitors. The tool provider builds on top of that foundation — which is why their own practices still matter — but the underlying infrastructure is serious.
When you upload a file to a secure platform, it's scrambled before it even leaves your device. If anyone intercepted the connection mid-transfer, they'd see nothing but encrypted noise — not your contract. This is the same protection used by online banking.
The easy thing to check: does the URL start with https://? If yes, that protection is active. Any reputable platform will have it.
What happens to your document mid-transfer
Your document
Scrambled for transfer
Intercepted — unreadable noise
Server receives — unscrambled safely
Scrambling during upload protects documents while they're travelling. But what about when they're sitting on the server?
Good platforms encrypt stored documents too — meaning that even if someone somehow gained access to the underlying storage, they'd see scrambled data, not your files. Without the decryption key, it's unreadable. This is the standard used by governments for classified information.
Under UK GDPR and equivalent laws, if you use a third-party tool to process personal data — which most contracts and invoices contain (names, addresses, email addresses) — you legally need a formal Data Processing Agreement with that provider.
Think of it as a contract that spells out: what data is being handled, what it's used for, how it's protected, and what happens if something goes wrong. It also confirms the provider can't use your data for their own purposes.
Without one, you could technically be in breach of data protection law — regardless of how secure the platform is technically. A reputable provider will have one ready to sign.
If your company is based in the UK but using a US-based tool, ask whether they have the relevant international data transfer agreements in place too.
Even with strong security, you don't want your contracts sitting on someone else's platform indefinitely. Look for two things:
Data protection law requires organisations to keep personal data only as long as necessary — and good platforms make it easy to comply with that.
This is the question most people forget to ask — and it's one of the most important ones. Some AI platforms use the documents processed through their tools to improve their models. That means your contracts, pricing terms, and supplier agreements could become part of their training data.
Any platform handling confidential business documents should clearly state that customer data is never used for model training. If you can't find that commitment in their privacy policy, ask before you upload anything sensitive.
| Check | What to look for |
|---|---|
| Encrypted during upload | HTTPS URL — check the padlock in your browser |
| Encrypted while stored | Stated in their security or privacy documentation |
| Reputable hosting | Google, Amazon, or Microsoft infrastructure |
| Data agreement available | Formal agreement available and signable on request |
| Documents deleted after use | Automatic deletion + option to delete manually |
| Not used for AI training | Explicit written commitment in their privacy policy |
Nextraxion is hosted on Google's enterprise cloud infrastructure. This applies to every document processed through our contract extraction pipeline — from NDAs and MSAs to invoices and purchase orders. All documents are encrypted during upload and while stored. Documents are automatically deleted after 30 days, and you can delete them manually at any time. A formal Data Processing Agreement is available and includes the necessary clauses for UK and international transfers.
Your documents are never used to train AI models — ever. The platform extracts your data, returns it to you, and that's it. The document itself is not retained beyond the deletion window.
If you have specific compliance requirements — internal data policies, sector regulations, or enterprise procurement requirements — email us at hello@nextraxion.com and we'll walk through them with you.
For reputable providers, yes. Look for end-to-end encryption in transit and at rest, SOC 2 compliance, and a clear data processing agreement. The question to ask any provider is whether your documents are used to train AI models — with Nextraxion, they are not.
Only you and members of your organisation with access to your account. Reputable tools apply strict access controls so your documents are not visible to other customers or to the provider's staff outside of specific support scenarios.
Nextraxion processes your documents to extract the requested data. Uploaded files are not retained for model training or shared with third parties.
For highly sensitive documents — those containing personal data, financial account details, or privileged legal information — redacting information that isn't needed for extraction is good practice regardless of the provider.
Compliance depends on the provider's data handling practices and your own obligations as data controller. Nextraxion processes data within compliant infrastructure. You remain responsible for ensuring you have appropriate grounds to process any personal data contained in the documents you upload.
Questions about our security practices or compliance documentation? Email hello@nextraxion.com.