Shadow AI explained: The work shortcut that could leak your company’s secrets

Using an AI chatbot, assistant, or browser to speed up your work is tempting, but doing it without your employer’s knowledge can put sensitive data at risk.

You’re swamped, so you paste a long email thread into a free chatbot and ask for a summary. It works, it saves an hour, and nobody notices. But the thread may contain customer details or confidential plans you’ve just shared with an outside service.

If your employer hasn’t approved that tool or how you’re using it, that’s shadow AI.

“the use of AI technology which isn’t captured in an organisation’s approved systems and processes.”

A Microsoft study published in 2025 found that 71% of UK employees surveyed said they had used AI tools at work their employer hadn’t approved. Most people aren’t doing this to cause trouble. They want to get their work done faster, and the tools are right there.

Shadow AI isn’t limited to chatbots. It can also be:

AI features are appearing in search engines, email apps, and phones. Instead of a helpful list of links, Google now tries to answer your question. Microsoft’s Copilot drafts replies to your boss before you’ve had coffee. Your phone summarizes conversations you don’t even remember having. That makes it easy to start using one without checking whether it’s approved for work.

When you enter data into a public AI tool, it leaves your company’s control. The service may keep that data or use it to improve its models, unless specific privacy controls are in place. That can lead to data breaches, lost intellectual property, and regulatory problems.