Warning popup: 'your PC is infected – call Microsoft'

A full-screen warning with a siren cannot be closed. On the phone a 'technician' takes over the PC, presents harmless log files as 'viruses' and demands money — often by gift card or transfer.

Warning signs

  • Microsoft/Apple never call and never show a phone number in your browser
  • Remote access is required
  • Payment by gift card
  • The window supposedly cannot be closed

What to do

Close the browser via task manager, uninstall the remote tool and change passwords from another device.

Source: Usedom: Falscher Microsoft-Support kassiert 25.000 Euro