Since so many members have asked to disable their accounts and others are asking about it:
1) Personal info is never provided to ECCIE so ECCIE has no info that can be used against members;
2) Credit cards are billed through a third party, CC Bill, and ECCIE is never given that information;
3) The only connection to the real world would be if you were stupid enough to use your real email address, an email address used for other personal stuff, or a name/handle that you use on other public sites and others in the real world would know you by;
4) I've been told that old email addresses and names that have been changed are deleted from the system at the time of the change so they no longer exist.
So, if you've been a victim of AM and/or have a snooping spouse/SO that knows all your "private" email accounts and usernames that's one thing. If you're worried about the slim chance that ECCIE gets hacked, there is no personal information here that can be used or connected to members. If you're worried about a username or email address that could tie you to other sites then change your email and ask for a name change. Otherwise you're just being overly paranoid for no reason.