How to Recognize a Fake Virus Warning

You are browsing a website when the screen suddenly fills with a flashing warning: your computer is infected, your files are at risk, and you must call a support number right away. Messages like this are common, and many of them are not real security alerts at all.

Common signs of a fake alert

• It appears inside a web browser window rather than from security software you installed.
• It urges you to call a phone number, often claiming to be from a well-known tech company.
• It uses countdown timers, sirens, or alarming language to rush you.
• It asks for payment, gift cards, or remote access to your computer.
• It makes it hard to close the page or leave the site.

What legitimate software usually does

Genuine antivirus software generally shows notifications through its own app or the operating system’s notification area. Reputable companies do not typically ask you to phone an unsolicited number displayed in a pop-up.

How to respond

• Do not call the number or click buttons in the alert.
• Close the browser tab or window. If it will not close, quit the browser entirely and reopen it without restoring the previous session.
• If you are still concerned, open your installed security software directly and run a scan.
• Look up support contact details on the official website of your device maker or software provider.

If you already shared payment information or allowed someone remote access, contact your bank or card issuer and consider asking a trusted support professional to check the device.

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