This guy found a crazy bug in modern browsers!!!
Oh my goodness. This blew my mind.
This link could've been a scam:
https://www.аррӏе.com/
This is the real site:
https://www.apple.com/
Click on it. (top link) It's a secured site. It has the secured icon in the URL bar.
You couldn't tell.
All this guy had to do was give you a login box and he'd have your username and password. (Assuming you use Apple)
He could've done this with almost any site.
Scary stuff!!