Hi @Rosie-and-Peter0,
Welcome to the community and Thanks for sharing your experience.
Yes, that is usually changing password because of data breach.
Login notifications are an extra security feature that can help alert you if someone accesses your Airbnb account without your permission. We'll send you an email each time someone logs in.
What is login notifications?
Host >dashboard > security > check turn on or turn in login notifications
When someone log in from different browser and device, you will be asked to confirm that's you.
You will be able to choose the verification method via call, and and email.
What should I do when someone log in to my account
https://www.airbnb.com/help/article/359/what-should-i-do-if-i-think-someone-has-logged-into-my-accou...
Happy Hosting