Leaked Customs and Border Protection facility codes have raised concerns over the security of the nation's borders.

A group of online users discovered a set of Quizlet flashcards that appeared to contain classified information about the layout and security protocols at various US Customs and Border Protection (CBP) facilities. The leaked data includes details such as gate numbers, checkpoint names, and perimeter fences, which could potentially be used by individuals or groups seeking to evade border control. An investigation into how the sensitive information came to be shared online revealed that it was likely uploaded by someone with unauthorized access to CBP systems. CBP officials have not commented on the leak, but experts warn that compromised security can have severe consequences for national security and public safety.