Possible Nexon Database Exploit?

Its not your "signature" per say, its Nexon login signature they are filtering on, so anyone login to Nexon, it would trigger their "trap" and the login info would get capture. To avoid it, login to ms using the game launcher, as it uses the in-game encryption for the login ID and password which is a lot harder to crack.

And this is all under the assumption that someone would take the time to target my university? Let it be known that I do, in fact, sign in through game launcher, save for the rare occurrence that I don't, and even then I merely click "Start Game" and my info is already in the boxes; I don't need to physically type anything.