It fills the whole screen. It has a Microsoft logo, a blaring alarm sound, maybe a robotic voice saying your computer is infected. There is a countdown, a warning not to shut down your computer, and a toll-free number to call. Every part of it is designed to panic you — and every part of it is fake.
What you are actually looking at
It is a web page. Not a system warning, not a virus alert from Windows — a web page, doing what web pages can do: playing sounds, going full-screen, and drawing scary boxes. You usually land on one through a mistyped address, a dodgy ad, or a compromised site. At the moment it appears, nothing has happened to your computer yet.
The danger is not the popup. The danger is the phone number. Real Microsoft does not know what is happening on your computer, does not put phone numbers in virus warnings, and will never ask you to call. The people who answer that number run a script: they get you to install remote-access software, show you harmless system logs as "proof" of infection, and then charge hundreds of dollars to fix nothing — or worse, they get into your banking while they have control of your machine.
How to close it safely
- Do not call the number, and do not click anything inside the popup. Even its own "close" button can be a trap.
- Open Task Manager by pressing Ctrl+Shift+Esc, select your browser in the list, and click End task.
- When you reopen the browser, do not restore the previous session if it offers — that just reloads the scam page.
- Nothing more is usually needed. If the popups keep coming back on their own, something is genuinely installed, and that is when a proper malware clean-up is worth doing.
If you already called them
You are not the first, and there is no shame in it — these pages are engineered by people who do this full-time. But move quickly, in this order:
- Disconnect the computer from the internet. Turn WiFi off or unplug the cable. If they installed remote software, this cuts their access.
- If you paid them or logged into banking while they were connected, call your bank now. Card payments to these operations can often be disputed if you act fast.
- From a different device, change your email and banking passwords.
- Have the machine properly checked before using it for anything sensitive. Remote-access tools and payment details left in a scammer's hands are not something to guess about — our virus and malware removal service includes checking exactly what was installed and what it touched.
The one-sentence version to tell your parents
If a computer warning has a phone number in it, it is a scam — real warnings never ask you to call anyone.
Rather someone just fixed it?
Call us and describe what is happening. We will tell you what it is likely to be and what it would involve — before you commit to anything.
Written by the technicians at Afford IT, Indooroopilly. We service homes and small businesses across Greater Brisbane.