How can I detect that a user's SID has changed and recover their old data?
A customer maintained a database which recorded information per user. The information in the database is keyed by the user's SID. This works out great most of the time, but there are cases in which a user's SID can change. "Wait, I thought SIDs don't change." While it's true that SIDs don't change, it is also true that the SID associated with a u...