A few years ago I got an email saying that an unknown Microsoft account had been renamed from one of my email addresses to a new email address I don't own. It

A few years ago I got an email saying that an unknown Microsoft account had been renamed from one of my email addresses to a new email address I don't own. It appears that someone was able to link an MS account to my email with no verification, then rename the account, again with no verification. Best case is that it's someone who used my email as a recovery email for their MS account and changed it. But with the mess of MS accounts, I'm always nervous they've got some residual control of my real account which is also linked to that email. Unfortunately I've never been able to get confirmation from MS that things are OK. There are plenty of questions about this particular renaming issue on the web, but no answers.