I have been longing to try this find this out for a while.
If for example i have 2 accounts:
Account [A]
Account [b]
If i decide to hack/exploit/glide/scam or what ever on [A] and i get banned,
Is Blizzard able to track via IPs my that account [A] and account [b] are linked and ban both? or will they not go through all of that hastle?