Managing personal Outlook.com account settings, security, and privacy
i have the same issue. honestly the fact that there is no way to report the bot emails from even trying to access your account again and again is absurd. receiving constant notifications that someone is trying access your account is annoying and ridiculous. plus i only found out when i received a notification saying my security info had been changed. at 2am. which means they got in. the change in security info actually locked me out of my account. i jumped through hoops to get back in. and if i was unable to, they would have had complete access and been able to lock me out. i have everything from important documents to subscriptions on my account. that i pay for, if you understand what I'm saying.
respectfully Microsoft. not good enough