Pfft, Nexon was using links like that years ago. They started making you have to run MapleStory through their website using links in a similar way, I believe. But back then my computer was utter stuff, couldn't run more than two things at once. So starting up my browser, then waiting for it to load, then running the game, then closing the browser correctly, was a massive pain in the ass. So I used this legitimate method to use a launcher instead of sending me to the website.
Point being... People have known these can be unsecure for years, probably. It mentions Steam had a problem last year with it. Why the hell do people still use these systems without closing loopholes in it? It's bad practice altogether, anyway. I could only imagine opening through a website is meant to have the browser tell them what the person is so they can ban people more easily, which is likely easy to bypass at this point with browsers/browser-mods designed for hackers.
