Use services like Have I Been Pwned to see if your email address has appeared in this or other documented data breaches.

If available, adding an extra layer of security prevents logins even if your password is leaked.

Netflix Data Breaches: Full Timeline Through 2023 - Firewall Times

The data is "targeted" because it has been curated or filtered specifically for Netflix, often harvested from other breaches where users reused the same passwords. Context in Cybersecurity