Server :: Why Mysql Automatically Logging In Without .my.cnf Or My.cnf Sections

I've checked and double checked that there is no user and password directive in /etc/my.cnf and ~/.my.cnf but it seems that every time I issue mysql it will drop me into the command line without prompting for a password or giving any pause. Of course, the only table I have access to when doing this is information_schema with read only on most of it and no access on the rest, but I was just wondering where else an auto-login style authentication could be coming from.