Managing personal Outlook.com account settings, security, and privacy
Hi, jayden driver.
Thanks for your reply.
Do you mean that you found a draft in your Microsoft account that was not written by you?
Microsoft forums provide technical support, and we cannot participate in your account issues.
Then you can enhance the security of your account by using a complex combination of uppercase and lowercase letters, numbers, symbols, etc., and set up two-factor verification, passwordless login, add a mobile phone number, add an alias, etc. to strengthen account security.
If someone tries to log in to your account, then I think you can try to change the alias, so that when others try to log in to your account, it will show that the account does not exist, thereby protecting your own account security.
Add or remove an email alias in Outlook.com - Microsoft Support
Please note that you must always make sure that your account has an alias. You need to add an alias first, set it as the primary alias, and then delete the original alias.
Best Regards.
Capoo - MSFT | Microsoft Community Support Specialist