Hacked Account

Hi I received an account locked out warning when I tried to log in this morning and was unable to access my account as it appeared to have been hacked. After speaking to some friends (also contacts) and they said that a mass email had been sent to a bunch of people using my account. I have been able to reset the password and can access my account again but there is an alternate email address that is registered in the list that I have never seen and appears to be from who/whatever hacked my account. That address is l***@hotmail.com and is not something that I registered or have ever used.

Can this please be removed ASAP as the hacker can use this to regain control over my account? I can add some further security after this is done but I'm hesitant to before this has been removed in case they gain access again. There has already been an email sent to that address to try an reset the password (an earlier attempt) and I was unable to reset that account either.

I can provide an alternate email address for contact if this one becomes compromised again.