If available, adding an extra layer of security prevents logins even if your password is leaked.
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 1.6M Netflix Targeted UHQ.txt
Netflix Data Breaches: Full Timeline Through 2023 - Firewall Times If available, adding an extra layer of security
Use services like Have I Been Pwned to see if your email address has appeared in this or other documented data breaches. update your Netflix credentials immediately.
If you suspect your data might be in such a list, update your Netflix credentials immediately.