ScamSplain

Antivirus 'Expired' Pop-up Scareware

A pop-up claims your antivirus expired and your device is at risk, pushing you to 'renew' or download something that is fake or harmful.

Think a message like this reached you? You can check it right now.

What this scam is

While browsing, a full-screen pop-up warns that your antivirus has expired and your computer is exposed, urging you to renew immediately or download a 'fix.' The button leads to a phony renewal that captures your card, or installs unwanted or malicious software. Real antivirus renewals happen inside the program you installed, not through a browser pop-up.

What it usually looks like

  • A browser pop-up saying your antivirus expired.
  • Alarming red warnings and a countdown.
  • A 'renew now' or 'download update' button.
  • A brand name you may not even use.

Common warning signs

  • Antivirus warnings that appear in a web browser.
  • Countdowns and scare language.
  • A renewal that asks for card details on a web page.
  • Prompts to download an 'update' from a pop-up.

Example wording scammers use

WARNING: Your Norton subscription has expired. Your PC is unprotected. Renew now to remove 5 threats.
Windows Defender detected malware. Update your protection immediately.

These are illustrative examples written by ScamSplain, not real messages.

What the scammers want

  • Your card details on a fake renewal page.
  • To install unwanted or malicious software.
  • To push you into a tech-support call.

What to do

  • Close the browser tab or window; do not click inside the pop-up.
  • Check your real antivirus by opening the actual program.
  • Renew only inside the software you installed.
  • Run a scan if you are unsure.

What to do if you already responded

  • Call your card issuer if you entered card details.
  • Uninstall anything you downloaded and run a security scan.
  • Report at reportfraud.ftc.gov.

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