1. Check if your email account has been hacked by reviewing the list of activity on your account.
2. Change your account password regularly and use a unique password.
3. Check the security settings for your email account.
4. Avoid opening and clicking links in emails from unknown sources.
5. Remove any suspicious email addresses from your contacts list.
6. Check your firewall settings on your computer for suspicious activity.
7. Run a virus scan on your computer and ensure all software is up-to-date.