How To: Recover Your Account if You Have Been Hacked

If you suspect that an unauthorized person has used your Windows Live ID to sign into your Windows Live Hotmail acccount, or any other Windows Live service, please read this article for further help.

https://windowslivehelp.com/solutions/accounts/archive/2008/10/25/what-to-do-if-you-think-your-accounts-been-stolen.aspx.