You're browsing the web and suddenly a red warning screen fills your monitor. It claims your computer is infected with 15 viruses and you need to call a number immediately. The screen won't close, and you hear a loud alarm sound. This is the fake tech support pop-up — a scam that has been running for over a decade and still works because it creates genuine panic.
Here's how this scam works and what to do when you see it.
How Fake Tech Support Pop-ups Work
These pop-ups typically appear through malicious ads or compromised websites. The scam uses JavaScript to lock your browser window, prevent you from closing it, and display a fake alert that looks like a real Windows system warning.
When you call the number, the "tech support agent" will:
- Ask for remote access to your computer (usually via TeamViewer or AnyDesk).
- Run fake diagnostic tools to show more fake errors.
- Pressure you to pay for expensive "support packages" starting at $200-$500.
- Sometimes install malware to steal your data.
How to Close Fake Tech Support Pop-ups
- Don't call the number displayed on the screen.
- Don't click any button on the pop-up, including the "X" or "Close" button.
- Use Task Manager (Ctrl+Alt+Delete) to close your browser completely.
- If that doesn't work, restart your computer.
- Clear your browser cache after restarting.
What to Do If You Already Called or Gave Remote Access
- If you gave remote access, immediately disconnect your computer from the internet (unplug Ethernet or turn off Wi-Fi).
- Change all your passwords using another device.
- Run a full antivirus scan using a reputable security tool.
- If you paid, contact your bank or credit card company to cancel the transaction.
- Report the scam to your country's fraud authority.
Final Thoughts
Fake tech support pop-ups are designed to exploit fear. The moment you see one, remember: legitimate tech companies will never ask you to call a number displayed on a pop-up. Stay calm, force-close your browser, and move on with your day.