Recognize browser scare tactics
- Loud alarms, countdowns, locked-looking pages, and urgent phone numbers are common scam design.
- A web page cannot reliably diagnose the whole computer.
- Check whether the warning is inside the browser rather than a trusted Windows security panel.
Close it without interacting
- Use Alt+F4 or Task Manager if the tab refuses to close.
- Reopen the browser without restoring the suspicious page.
- Remove notification permission for the site and clear its browsing data.
Check for follow-up damage
- Run Windows Security and inspect recent downloads and installed apps.
- Change passwords if any were entered or shown during a call.
- Contact the bank if payment or account access occurred.
Stop guessing when the problem keeps coming back
Ask for help if the popup returns, software was installed, someone connected remotely, or you called the displayed number.