I need a way to identify users that won't change if our e-mail or username naming conventions change; they have in the past. We use LDAP, but our international offices use Active Directory, so I'm a little green here.
I've noticed from a dump that all users have a unique value assigned to uSNCreated. Is this globally unique for a user? Will it change if any of their properties change? Is this my holy grail of unique identifiers for AD?!