[numberwhun]

@0xexplorer is absolutely correct with both of those suggestions. You need to know where you account is being logged in from (if someone is trying) and setting up 2-factor auth won't allow someone with just the password in. Change your account password before switching to 2-factor auth. When you do, be sure you first have a q-code reader and google authenticator on your phone. This way you can turn on their code generator as part of the process. Unless you like texts of course, but its up to you.