Q: XP2 in DefaulterUser can automatically generate it?

Users questions:Q: XP2 in DefaulterUser can automatically generate it? I found that my system has a DefaulterUser, but I feel like I have not rebuild a new user, ah, that my system should be only one AllUser and a current user, how will a moreA? (Poisoned?)
Experts answer: is automatically generated, usually hidden under
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