When WeTransfer quietly changed its policy to allow user files to train their AI models, it sparked outrage. After all, most people thought they were using a simple file transfer service, not feeding someone’s neural network.

Facing backlash, the company backtracked. They said they would not use files for AI training, for now. But that wasn’t the real shock. What really stunned users was learning that, buried in WeTransfer’s terms all along, was a sweeping clause:

“A worldwide, non-exclusive, royalty-free license to use your content for the purpose of operating, developing and improving the services.”

Translation? By uploading a file, you grant WeTransfer the right to use it indefinitely.

That means your content was always accessible to them. And once something is accessible, it’s copyable. Usable. Indexable. Or yes… trainable.

So even if AI training is “paused,” your files are still part of a system you don’t fully control.

And the uncomfortable truth is this isn’t just about WeTransfer. It’s how most cloud services work. Dropbox, Google Drive, Microsoft OneDrive, and even file transfer tools like Smash, Send Anywhere, and TransferNow may offer convenience, but they don’t always offer control.

In this post, we’ll unpack:

• Who really has access to your files
• Why “end-to-end encryption” doesn’t always mean what you think
• And how AI has accelerated the need to rethink what privacy actually means

Who really has access to your files

When people use services like WeTransfer, they often assume their files sit in a digital lockbox waiting for the recipient. In reality, your data travels through the company’s ecosystem, and often beyond. For example, as stated in WeTransfer’s own terms, the company can access files to check for viruses or illegal content.

And just like with messaging apps, metadata such as filenames, file types, and timestamps may be analyzed, or even shared with third parties.

So… who can see your file?

• The user (hopefully)
• The platform (likely)
• Their staff (potentially)
• 3rd-party vendors, backup providers, CDNs (frequently)
• Legal authorities (definitely, if asked)

Even if no one is actively “reading” your file, each of these actors may have visibility, and that’s what matters.

“But it’s encrypted!”: What that really means

Many services advertise encryption, but the details matter. End-to-end encryption (E2EE) means your file is encrypted on your device and can only be decrypted by the intended recipient, not the platform, not its staff, not even its systems.

But most cloud services don’t work that way.

Instead, they use encryption in transit (when your file is being uploaded) and at rest (while it sits on their servers). But because they manage the encryption keys, they can decrypt the file whenever they need to. This allows them to provide previews, search features, and other conveniences, but it also means they retain access.

If the platform can see your file, then so can anyone with enough privileges or legal leverage. True E2EE removes this possibility by removing the platform’s access entirely.

How AI has accelerated the need to rethink what privacy actually means

Before AI, many users were willing to tolerate a little opacity around their data. If a platform claimed not to abuse their access, most users looked the other way.

But AI changed the equation.

Training data is everything. And user-generated content, from emails to PDFs to photos, is incredibly valuable for machine learning. That’s why some platforms now include terms that let them use your files to “improve the service”, vague language that can include feeding their AI.

Even if they say they aren’t doing it today, they often reserve the right to do it later. And unless your content is truly inaccessible to them, encrypted in a way they can’t undo, there’s nothing technically stopping them.

Privacy today isn’t just about avoiding prying eyes. It’s about preventing your data from being quietly absorbed into systems you don’t control and can’t audit.

What privacy really means today

Do you control who accesses your files? Do you control how long they’re stored? Do you control whether they’re used to training someone else’s algorithm or passed through someone else’s server?

True privacy means:

• Your data is encrypted before it ever leaves your device
• The platform you use cannot access, analyze, or retain your content
• You define who can open the file, and only those people can
• Even the metadata, not just the content, is minimized or protected

If a system allows others to see, process, or use your files, even “just to improve the service”, that’s not privacy. That’s exposure disguised as convenience.

And in a world increasingly driven by AI, surveillance, and data monetization, real privacy is no longer a niche concern. It’s essential infrastructure.

A better path forward

If you’re looking for true privacy, start by demanding more from your tools.

Choose platforms that are built differently, ones that never have access to your content in the first place. Look for technologies that use true end-to-end encryption, where your data is encrypted and decrypted only on your device. Options like ProtonDrive or Tresorit are moving in this direction, reducing provider access to your data.

Secrets Vault offers something even more radical: image-based cryptography. Unlike traditional encryption, which often depends on passwords or platform-controlled keys, cryptography in this form is grounded in deeper mathematical design that ensures both protection and control.

Protect your information at Secrets Vault

With more than 30 years of combined experience in cryptography and cybersecurity, Secrets Vault introduces a new way to protect information, one that doesn’t rely on passwords at all.

Our patented image-based cryptography turns any image into a secure cryptographic key. That means a photo you already own becomes the only way to access your private files, thoughts, or messages.

And the best part? We can’t see anything. Not your image. Not your content. Not your keys.

This is privacy that lasts. Resistant to breaches, surveillance, and even AI-powered inference attacks.

It’s a new way to secure your digital life, one that gives you total control, with zero compromise.

👉 Try Secrets Vault now or book a free consultation with our team.