Hi Lam Vu,
Thank you for posting to Microsoft Q&A Forum.
I understand your Hotmail account was hacked and you have already changed your password. To make sure no one else can still access it, please follow these steps:
1. Sign out from all devices
- Go to Sign In
- Select Sign me out everywhere.
- This will force all devices and sessions to log out, including the hacker’s.
2. Check recent activity
3. Change your password again (optional but safer)
- Use a strong, unique password that you have not used before.
- Avoid using similar passwords to previous ones.
4. Review security info
5. Turn on Two-Step Verification
6. Scan your devices
- Run a full antivirus/malware scan on any device you have used to access Hotmail. Hackers sometimes install keyloggers to steal passwords again.
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Please feel free to let me know if you have any further updates, thanks