Spotting fake virus alerts and tech support scams

Updated November 2026 · All guides

Websites cannot scan your computer from a browser tab. Any page claiming it found viruses is trying to scare you.

Common signs

• Full-screen warnings with countdown timers or loud alarms.
• A phone number telling you to call 'support'.
• Logos of famous brands on a page you did not choose to visit.
• Requests to allow notifications or install software immediately.

What to do

1. Do not call the number or click buttons.
2. Close the tab. If it will not close, end the browser from Task Manager (Ctrl+Shift+Esc).
3. Reopen without restoring the previous session.
4. Run a scan if you clicked anything or allowed notifications.

Real security software alerts come from the installed program on your PC, not from a web page.

Independent service provider. GuideOnPC is an independent provider of PC security information. We are not Microsoft, Norton, McAfee or any antivirus company, and we do not offer technical support on their behalf. Always buy software from the official vendor site.

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