Is Your Team Leaking Company Data to ChatGPT Without You Knowing?

Ask around your office and there’s a good chance someone’s already using ChatGPT, Copilot or Gemini to draft emails, summarise documents, or speed up a report. Probably several people. And there’s an equally good chance nobody in IT signed that off, checked what’s being typed into it, or thought about where that information ends up.

This isn’t a hypothetical. It’s happening in small businesses across the UK right now, and it’s one of the fastest-growing gaps in AI security for small business we’re seeing. Staff aren’t being reckless — they’re just trying to get their job done quicker. But every time someone pastes a client list, a contract, or a set of financial figures into a public AI tool to “tidy it up,” that data has left your control. You’ve no way of knowing where it’s stored, who trains on it, or whether it resurfaces somewhere it shouldn’t.

What’s actually going on — and why IT teams can’t see it

The technical term for this is “shadow AI” — AI tools being used across a business outside of any policy, approval process, or IT oversight. It’s the modern version of shadow IT, except the stakes are higher because the tools are designed to absorb whatever you feed them.

Most of this happens through a browser tab. There’s no software install to flag, no admin request to approve, nothing that trips a traditional alert. An employee opens ChatGPT in a new tab, pastes in a spreadsheet of customer details to “summarise the key points,” and gets on with their day. From your side, it looks like nothing happened at all.

That’s the problem with AI security for small business right now — most tools built to catch this were designed for big enterprises with dedicated security teams and six-figure budgets. They add another console to log into, another system to manage, and another cost line that doesn’t make sense for a ten- or twenty-person business.

What’s at risk when AI use goes unmanaged

It’s easy to assume this only matters for big corporates handling sensitive government contracts. It doesn’t. Any business holding customer data, financial records, HR files or supplier contracts is exposed the moment that data gets typed into a public AI tool. A few examples we’ve seen discussed by clients and industry peers:

• Customer names, addresses or account details pasted in to “write a friendlier version” of an email
• Financial spreadsheets uploaded to get a quick summary or forecast
• Draft contracts or HR documents shared with AI tools for a rewrite
• Login details or internal processes typed in while troubleshooting something

None of this is malicious. It’s convenience winning over caution, which is exactly how most data incidents happen. And if your business handles any personal data — which almost all of them do — this is also a GDPR problem waiting to surface, not just a security one.

There’s a second, less obvious risk too: malicious prompts. Attackers are starting to experiment with “prompt injection” — hidden instructions buried in documents or emails that try to manipulate an AI tool into behaving badly, leaking data, or producing harmful output. It sounds futuristic, but it’s already a practical attack vector, and most small businesses have zero visibility into whether it’s happening to them.

How Acronis GenAI Protection tackles this

This is exactly the gap Acronis has built GenAI Protection to close, and it’s now part of the Acronis Cyber Protect platform we already use to protect and back up client systems. Rather than bolting on yet another separate tool, it works inside the security stack that’s already monitoring your endpoints — which means no extra console, no extra agent, and no extra complexity for your team to manage.

In practical terms, it does three things:

• Shows you where AI is actually being used. It gives visibility into browser-based GenAI tools across your business, so you can see patterns and exposure instead of guessing. Unwanted AI tools can also be blocked outright through URL filtering if that’s the policy you want.
• Stops sensitive data going out the door. Prompts are inspected before they’re submitted to public AI tools, and unauthorised sharing of things like personal data, financial details or confidential business information can be blocked automatically — turning “we have a policy about this” into something that’s actually enforced.
• Catches harmful or manipulated prompts. It’s built to detect and block prompt injection and other techniques designed to manipulate AI behaviour, reducing the chance of an AI tool being turned into a backdoor into your systems.

The point isn’t to ban AI — most businesses genuinely benefit from it, and trying to block it outright rarely works anyway. The point is making sure it’s used safely, with the same kind of oversight you’d expect for email, file sharing or any other system that touches company data.

What this looks like for a business like yours

Picture a small accountancy or professional services firm in the Midlands. Someone in the team starts using an AI tool to help draft client correspondence — nothing sinister, just trying to save time during a busy week. Without any visibility, that could easily mean client financial details being pasted into a public tool with no record of it ever happening.

With GenAI Protection in place, that activity becomes visible instead of invisible. If someone tries to submit sensitive data to an AI tool, it can be stopped before it leaves the building — and you get a genuine answer to the question “is our data actually safe?” rather than a hopeful assumption.

Worth knowing before you switch it on

We’d rather be upfront about this than oversell it. GenAI Protection covers AI activity happening through the browser — which is where the vast majority of shadow AI use takes place. It isn’t a complete answer for data leaking through every possible channel; for broader coverage across local apps, USB devices, and other routes data can travel, that’s where Acronis’s wider Data Loss Prevention tools come in alongside it. Think of GenAI Protection as closing the biggest and fastest-growing gap, not as a single silver bullet for every data risk your business faces.

The bottom line

AI tools aren’t going away, and honestly, they shouldn’t — used properly, they’re a genuine productivity boost. But “used properly” needs to mean something more than hoping for the best. If you don’t currently have any visibility into what your team is typing into ChatGPT or similar tools, that’s not a small gap — it’s one of the biggest blind spots in most small business security setups right now.

We’re currently rolling this out with our managed IT support customers, and we’ll be in touch separately about what it means for your account. In the meantime, if you’d like to talk through where your business stands on AI use — or just want a straight answer on whether this is something you need — get in touch with the team in Tamworth and we’ll talk it through, no sales pitch required.