Example: You're botting in KMS and you supplied your SSN, and Nexon have evidence that you are botting, and MS Mesos they are permanently banned you and your SSN will have a record that you have participate prohibited pursuits. When you attempt to register games that required SSN (mostly in South Korea); you may have bothering register an account on that particular game.

Solution to reduce hackers/botters in GMS:It had to embrace the machine that Blizzard has, since you're providing actual identity and they can essentially banned you for actual (Literally get banned in their cheapest Maplestory Mesos host for real). Make the exact method as KMS; the danger of having SSN convicted and convicted identity is quite full of US/Canada/Mexico, so consequently some may disagree with this.