'Congratulations!' 당신은 기프트카드에 당첨됐습니다.

'당신의 아이폰에 바이러스가 있습니다'

*아이폰 팝업 사기를 피하는 법 

https://support.apple.com/en-us/HT203987

How to get rid of the 'Congratulations' pop-up virus on your iPhone or iPad

No, you haven't won a gift card. Yes, you do have a virus. And yes, you can do something about it.

https://www.mirror.co.uk/tech/how-rid-congratulations-pop-up-14242133