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  • Plugin Author WFMattR

    (@wfmattr)

    I haven’t seen this one before, but if the username doesn’t exist, then it should not be an issue.

    It may just be something unusual, like a bot that tries to trick a login system that blocks admin logins from non-whitelisted locations, but the actual login process strips underscores — but if so, that doesn’t work in WordPress. (Just speculation — thinking of a reason someone might try this.)

    -Matt R

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