Multi-factor authentication is pretty much par for the course these days. With the current login options, If a person were to have their SL account compromised, then their primfeed account is compromised as well. Brute force password login attempts are still a thing these days, as well as password from login dumps.

Passkeys / WebAuthn: https://en.wikipedia.org/wiki/WebAuthn

TOTP: https://en.wikipedia.org/wiki/Time-based_one-time_password

MFA: https://en.wikipedia.org/wiki/Multi-factor_authentication