Security alert: Microsoft Copilot in Word has vulnerabilities you need to know about

There is an important security problem in Microsoft Copilot Word that affects Latin American teams. Researchers found that malicious documents can infect other files automatically when you use Copilot.

Imagine you receive an Excel with customer data and open it on your work computer. If someone prepared it maliciously, the virus could spread to all your subsequent Word documents without you noticing. It's like receiving a letter that damages everything you touch afterwards.

How does this risk work? Copilot executes instructions embedded in documents. An attacker can hide malicious code disguised as normal content. When Copilot processes the file, the code activates and contaminates other documents on your system.

Who is at greater risk? Companies that frequently exchange files: agencies, consulting firms, human resources teams, legal departments. If your business works by sharing Excel, Word and PowerPoint documents, this vulnerability directly affects you.

What can you do now? First, don't disable Copilot completely; it's a valuable tool. Instead: disable it temporarily for documents from unknown sources. Update Windows and Microsoft Office now. If you're a manager, instruct your team not to open suspicious files with Copilot active.

For medium and large companies: consult with your IT team about setting up macro restrictions and real-time file analysis. It's a reasonable defensive measure while Microsoft releases a patch.

The good news: Microsoft is working on fixes. But in the meantime, stay alert. Security is a shared responsibility between the platform and the user.