enquiries about phishing email that i received

Not really strictly asking a staff

I received this phishing email . Its pretty obvious anyone with 2 brain cells can tell its fake. I was thinking it might be helpful if staff can pin this thread up as a warning to others.

https://i.imgur.com/2wMJJK2.png

I was wondering how did they get my email? I do not recall telling anyone my email on warmane or telling anyone i play wow on warmane outside of warmane. So i just want to ask if there was any security breaches on warmane's db?