Practice simulation — this is a fictional warning. Your computer is not locked.

End practice

Simulated support scam

Device Security Center

SECURITY ALERT · DEMO-021

Your computer has been blocked

Suspicious activity detected. Your files and personal information may be at risk.

Contact support immediately to restore access.

Supposed support number 000-000-0000 Fictional number for this exercise

This example uses fear and urgency to make you call a stranger.

Practice getting out

Return to the normal window, then leave the page.

Why does the browser ask if I want to leave?

Some websites use a message about unsaved changes to make you hesitate. This practice may show that real browser message. If it asks whether you want to leave, click Leave.

Returning to the normal window leaves the page open. To finish, close the practice tab using the X beside its title.

On a real suspicious page, use the browser’s controls to close the tab. Buttons inside the warning may be misleading.