Kind’ve clever eh: a real-sounding URL, “Support for Apple”, and a toll-free number, how nice for someone else to foot the bill.
The Attack
Pop-up window appears > you call the number > whomever answers is skilled with words > you’re tricked (social engineered) into doing something stupid, like providing a password or downloading a malicious file.
The Defence
Never call. This will never happen.
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See also: You’ll never win a contest via text