Update you password on Plex immediately!

🚨 Plex has announced a recent security incident. All users should reset their password or log out of all devices (if using SSO).

Plex has confirmed that an unauthorized party accessed limited account data (emails, usernames, and hashed passwords). No payment info was compromised.

What you need to do (per Plex):

If you log in with a password → Reset it here: https://plex.tv/reset

(check "Sign out connected devices")

If you log in with SSO → Log out of all sessions here: https://plex.tv/security

For added security, you should look to enable 2FA for extra protection

Full details from Plex: https://forums.plex.tv/t/important-notice-of-security-incident/930523