A public Quizlet flashcard set titled 'USBP Review' exposed what appears to be confidential security procedures for US Customs and Border Protection facilities near Kingsville, Texas. The set was live from February until March 20, 2026, when it went private within 30 minutes of WIRED contacting a phone number linked to the account.
CBP's Office of Professional Responsibility has confirmed it is reviewing the incident. The account holder's name matches a person living less than a mile from a Kingsville CBP facility, but WIRED could not confirm whether the creator is an active agent or contractor.
The story is worth reading in full for what it reveals about the specific nature of the exposed data, the timeline of how WIRED traced the account, and what CBP's carefully worded non-denial actually signals about the authenticity of the leak.
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