Re: Admin Command
If there was a breach they'd never let us know. But I don't believe it's a breach. Probably like with SWBF2015, chat message status can be faked, but that doesn't mean the faker has an admin account, he probably just can send messages that display as admin messages.
Regarding the Server, you can go to Options > EA Account > Ping Site and check which name is there. If it's default, just go one to the right and it'll show its real name with the same ping number, that's the server you most probably play everytime you join a match.