Man they've had a long couple of weeks...
https://emby.media/community/i…ver-security-compromised/
To make a long story short, it looks like a couple of twits are scanning IP's for Emby's default port to be open, gaining access to the system due to weak/no admin passwords, deleting existing users thus leaving folks unable to access their Emby server.
I'm only on page 2, and I've not saw anyone report actual data loss yet, but I'd be willing to bet if they are getting admin access, data is getting deleted.
USE PROPER PASSWORDS.