Fake tech support & "refunds"

A pop-up or cold call claims to be Microsoft, Apple, or your antivirus, warning of a virus or offering a refund. They ask you to install a remote-access app (like AnyDesk or TeamViewer) so they can "fix" or "refund" it — then steal from you, or "accidentally over-refund" and demand the difference in gift cards.

What to do: never install anything for someone who contacted you. Hang up. If you already gave access: disconnect the internet, uninstall the app, run a malware scan, and change passwords from another device.