Unknown account linked to Bungie.net profile

Each Microsoft Account will have one GamerTag associated to it. To check the enforcement history of that account, log in with your MS Account to enforcement.xbox.com

I would also take time to review the security settings and preferences here: https://account.microsoft.com/privacy That will also show recent activity of your account to possibly identify any suspicious or erroneous activity.

It is highly recommended you set up security proofs on your account. To set them up:

Navigate to the Settings hub on your console, select
Account, and scroll over to the Your Information panel. Now select Account Security, select Security Proofs and follow the prompts from there. You may need to put in your email and password to continue
with this step.

Ex. Set Up Email > enter the email to send the security code to and select Done > select Next or I Didn’t Get a Code > if you did receive a code, enter the code and select Done > Continue > Done!

You can also update your security info online at account.microsoft.com. For more information on security proofs, check out our support.xbox.com article “Add
and update the security info for your Microsoft Account”.

is your Xbox account already link to a Bungie account? the best way to check is try loging into bungie.net by selecting Xbox.

They replied:

Hello there,

In order to unlink an account, you first have to disable cross save and/or unlink accounts, you must be able to authenticate the accounts. Bungie cannot forcibly de-link them.

I would suggest contacting the platform concerning gaining access to the platform account.

If you are unable to gain access to the account, then you will not be able to deactivate cross save or unlink it from your current Bungie.net profile.

Destiny Player Support and Bungie cannot modify or remove accounts linked to Bungie.net profiles. To protect player privacy and data, you must be able to log in to any linked accounts to prove ownership prior to modifying your linked account. If you no longer have access to a linked account, you will need to reach out to the specific platform’s support for assistance with account recovery options.

So - this hacker can still play my game - he is impersonating me to my friends. I cannot get him out of my game. And I am not receiving help from Bungie whos game this is.

Can you do anything?

Well this started up when I linked my account on Bungie.net, so I've unlinked it and hopefully the problem is over.

I wonder if you'll have to make an account on halo.xbox.com or a new 343i website of some sort, like you did on bungie.net. I already have a halo.xbox.com forums account but I wonder if they will make you make one for overall access and link your gamertag
and WLID like you did on bungie.net.