Sensitive security information from U.S. Customs and Border Protection facilities appears to have been inadvertently exposed through online study flashcards, according to a report by Wired.

The flashcards were discovered on Quizlet, an online study platform, through basic Google searches. The cards reportedly contain what appears to be sensitive information related to gate security at CBP locations across the United States.

Quizlet is a popular educational platform that allows users to create and share digital flashcards for studying purposes. The platform is commonly used by students and professionals to memorize information for tests and training.

The discovery raises questions about information security protocols at federal agencies and how sensitive operational details may inadvertently become publicly accessible through seemingly routine study materials. CBP has not immediately responded to requests for comment regarding the reported exposure.

This incident highlights ongoing challenges federal agencies face in maintaining operational security while conducting necessary training and educational activities for personnel.