Dear Povich,
Welcome to Microsoft community.
I have read the whole thing you wrote, you might have received a lot of emails with unusual activity logins lately, but you can't tell if they are really from Microsoft or just phishing emails, which worries you and I understand your concern.
Don't worry too much, I'm going to show you how to verify the legitimacy of the Email, follow these steps:
1, Check the Sender's Email Address: Ensure the email comes from a legitimate Microsoft domain (e.g., @outlook.com, @hotmail.com, or @microsoft.com). Be wary of slight variations or misspellings. Slight errors or statements that don't make sense are likely to be phishing emails sent out in bulk.
2, **** Look for Personalization: While it's not a guarantee, legitimate emails from Microsoft often include your name or a part of your email address. Phishing emails may have poor grammar, unusual formatting, or generic greetings (e.g., "Dear User" instead of your name).
3, Hover Over Links: Don't click on any links. Instead, hover over them to see the actual URL. Legitimate Microsoft links should lead to trusted Microsoft domains.
4, **** Check Your Account Activity: Log into your Microsoft account directly (not through links in the email) and review your account activity for any unfamiliar sign-ins or attempts. Please follow this link to Check the recent sign-in activity for your Microsoft account - Microsoft Support.
These are some commonly used methods of identifying legitimate emails, and the same applies to your daughter's emails. in fact, the best way to deal with phishing emails is to improve the security of our own account, because people make mistakes, click the wrong phishing emails are also possible, and of course none of us want that to happen. You should consider how to make your account secure enough so that hackers can't easily do things to your account that will cost you a lot!
You can consider the suggestions in the following documents to improve the security of your account: How to help keep your Microsoft account safe and secure - Microsoft Support
You may consider turning on two-step verification for your account to improve account security, see:How to use two-step verification with your Microsoft account - Microsoft Support
Signing in with Microsoft Authenticator is also a good option, adding an extra layer of protection to your account: About Microsoft Authenticator - Microsoft Support
I wish you all the best, feel free to let me know if you need further assistance.
Best regards,
Harris-MSFT |Microsoft Community support specialist