Changing your username should send a notification email, for security purposes

I logged onto Minecraft for the first time in a while today, and found that somebody had accessed my account. My username name had been changed (twice). Luckily, they did not change (or were unable to) my password or security questions.

Anyways, my issue is that my account was hijacked over a month ago and I didn't find out until today. I obviously don't expect the system to just magically know when it's not me logging onto my account, so I have a suggestion. Username changes should send a notification email.

My account was hijacked at the end of June, and I'm just finding out today that my account details may be floating around somewhere on the internet. I don't really know how my account was taken over, and I don't expect to know, so I don't know if any of my other accounts have been compromised. I'd have liked to have known when it happened.

I already changed everything related to that account and plenty of others, and I'm in control of it again (so far as I know), but I think this change should be made sooner rather than later.