Caixa Econômica Federal, the operator of PIX, confirmed that the service encountered a momentary instability earlier today. The issue has been resolved, and PIX is now fully functional. Caixa emphasized that the interruption was brief and did not affect the security or reliability of the system. PIX users can continue to make and receive payments as usual. The cause of the disruption is under investigation, and Caixa will provide updates as they become available.