My microsoft account has been stolen due to poorly secured email, what should i do?

You would have to contact the company that owns the email and work on their recover methods there. If you can access your Microsoft account without needing to access that email, you can try logging in and changing you email address for your Microsoft Account.

From Change the email address or phone number for your Microsoft account:

1. Sign in to Manage how you sign in to Microsoft with your Microsoft account. If you’re having issues signing in to your Microsoft account, go to Microsoft account help.
   
   Note: You may be prompted to enter your Microsoft account password, or to enter a code sent to the email address or phone number listed in your account's security information. By providing this info to us, we know the request is coming from you.
   
2. If you want to use an existing email address or phone number, go to step 6. If you're adding a new email address or phone number, go to step 3.
   
3. If you selected Add a phone number, go to step 5. If you selected Add email, choose whether to add:
   
   • A new email address. Select Create a new email address and add it as an alias, and then follow the instructions.
     
   • A non-Microsoft email address (such as an @gmail.com or @yahoo.com email address). Select Add an existing email address as a Microsoft account alias, and then select Add alias.
     
4. ​​​​​​After you've added the email address, you'll be asked to verify that you're the account owner:
   
   1. Select Verify next to the new alias. A message is sent to the account for verification.
      
   2. After you receive the message, select the included link to confirm that you own the account.
      
5. If you selected Add a phone number, follow these steps:
   
   1. Select your country from the list.
      
   2. Enter the phone number you want to use, and then select Next.
      
   3. When you add a new phone number, we'll send a text message to that number to verify it. Enter the code in the text message, and then select Next.
      
6. Under Sign-in preferences, select Change sign-in preferences.
   
7. Either select the check boxes next to the aliases you want to use to sign in, or clear the check boxes for the aliases that you don’t want to use to sign in, and then select Save.
   

Best Regards

Hello,

Are you saying your email was hacked? Is that an @outlook email or is it a 3rd party email?

Best Regards,

what to do if your account has been stolen

What to do if your Account has been stolen <-Click.

My XBOX ONE has been stolen.

I have the serial number

I have changed password

Do I now remove this from my account?

I won't be able to track where it is signed in from then

I dont know what to do

Hi,

first of all you should follow these steps:

https://support.xbox.com/en-US/my-account/security/stolen-console