Scam category
Fake antivirus scams
Fake antivirus scams start with a frightening pop-up or browser alert claiming your computer is infected with viruses. The warning urges you to download security software or call a support number immediately. The software is either useless scareware that charges a subscription, or actual malware that steals your data. The phone number connects to a call center where operators charge hundreds of dollars to fix problems that never existed.
Category activity
“fake virus alert”
↑ 59%Watch for
- A browser pop-up claims your computer is critically infected and plays an alarm sound or locks your screen.
- The alert provides a phone number to call for immediate help instead of directing you to a known security product.
- The software is not from a recognized security vendor and was not installed through an official app store or vendor website.
Common searches
OpenScam News Feed
browser popup virus alert scam
A full-screen browser popup mimics a Windows or macOS system alert, claiming your computer is infected and urging you to call a phone number or download software immediately.
Force-close the browser using Task Manager (Ctrl+Alt+Delete) or Force Quit (Cmd+Option+Esc) — do not call the number.
Non-technical users
U.S.
fake Windows Defender alert scam
A webpage or popup imitates a Windows Defender notification, warning of detected threats and directing the user to call a support number or download a removal tool.
Close the browser tab or force-quit the browser — real Windows Defender alerts never appear in a browser.
Non-technical users
U.S.
rogue security software install scam
A website prompts you to install a free security tool that claims to find dozens of threats on your computer, then demands payment to remove them.
Uninstall the rogue software immediately using your system's Add/Remove Programs or a legitimate anti-malware tool like Malwarebytes.
Non-technical users
U.S.
tech support popup scam
A persistent browser popup warns of a critical security issue and instructs you to call a toll-free number, where scammers charge for unnecessary remote support services.
Press Ctrl+Shift+Esc (Windows) or Cmd+Option+Esc (Mac) to force-quit the browser without calling the number.
Non-technical users
U.S.
fake malware scan results scam
A website runs an animated fake scan of your computer, displaying fabricated threats to trick you into downloading software or paying for a premium cleanup service.
Close the tab immediately — no legitimate website can scan your local files through a browser.
Non-technical users
U.S.
antivirus subscription auto-renew scam
An email or popup claims your antivirus subscription has auto-renewed for a large amount, urging you to call to cancel — the goal is to gain remote access or steal payment info.
Check your bank or credit card statement directly — do not use the phone number in the email.
Non-technical users
U.S.
fake Norton renewal email scam
A phishing email impersonates Norton LifeLock with a fake invoice for annual renewal, directing you to call a number where scammers attempt to gain remote access to your computer.
Do not call the number — go to norton.com directly and check your account for any active subscriptions.
Non-technical users
U.S.
McAfee impersonator popup scam
A browser notification or popup mimics McAfee branding, claiming your subscription has expired or threats have been detected, and pushes you to renew through a fake payment page.
Revoke notification permissions in your browser settings for any site you do not recognize.
Non-technical users
U.S.
system cleaner scam
Software marketed as a PC optimizer or system cleaner claims your computer has hundreds of errors, then charges a fee to fix fabricated issues while potentially installing additional unwanted programs.
Uninstall the system cleaner using Windows Add/Remove Programs and run a legitimate malware scan.
Non-technical users
U.S.
mobile security app scam
A fake mobile security app on an unofficial app store or sideloaded APK claims to protect your phone but actually collects personal data, displays intrusive ads, or subscribes you to premium services.
Uninstall the app immediately and review all app permissions in your phone's settings.
Non-technical users
U.S.
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