Start with the pattern, not a guess
A browser pop-up can imitate a full-screen system warning, play an alarm, disable ordinary-looking controls, and claim that a countdown or phone call is required. The page does not gain legitimate diagnostic authority because it knows the browser or device type. Leave the page without calling its number, downloading its tool, or granting notification permission.
Practical checks and decisions
Work from observation to one controlled change at a time. Stop when the next step could risk data, accounts, electrical safety, or additional hardware damage.
Do not call a phone number shown in a browser warning
End the contact and do not use a phone number, link, download, or payment instruction supplied by the warning. Preserve the message, number, receipt, software name, and order of events.
Close the browser without clicking inside the message
From a separate trusted device, protect email and financial access first. Contact banks and account providers through independently verified channels and change only credentials that may have been exposed.
Never grant remote control to an unsolicited caller
Disconnect unexpected remote access and do not continue arguing with the caller. Record whether the person saw the screen, installed software, opened accounts, received a code, or obtained payment information.
Change passwords and seek help if you entered information
Review active sessions, forwarding rules, recovery methods, installed remote tools, and unfamiliar transactions. The response should match the access that actually occurred, not the scammer’s claims.
When a professional diagnosis makes sense
Get help promptly when money, passwords, email, remote access, or unfamiliar account activity may be involved. Preserve a timeline, end contact with the suspected scammer, and make urgent account changes from a separate trusted device.
For hands-on or remote help, explore the service options related to this issue, or browse the Help Center for another guide.
