The Supreme Court of Brazil has classified the ongoing investigation into the illegal leaking of tax data belonging to its ministers and other public figures under the highest level of confidentiality, designated as level 4 on the severity scale, which ranges from public processes at level 0. This classification is due to the presence of 'sensitive information' from the Federal Revenue and the Financial Intelligence Unit (Coaf). Consequently, the identity of the case's rapporteur is kept undisclosed in public consultations on the Supreme Court's portal, although it is known that Minister Alexandre de Moraes is the responsible party overseeing this case.

This move to high confidentiality is governed by Resolution 878/2025, which outlines the various levels of confidentiality applicable to court processes. The Supreme Court has not provided clarification on how many cases have been assigned the same level of secrecy, despite inquiries from Folha. Legal specialists argue that while such secrecy might be warranted in cases of national security or public interest, it could hinder the rights of the defense, as it prevents them from accessing information related to the judicial measures taken against them.

The implications of this completely closed investigative process raise concerns over transparency and the balance between protecting sensitive information and ensuring procedural fairness. As the case unfolds, it may challenge public trust in Brazil's judicial system, which has already faced scrutiny over its handling of similar sensitive matters in the past. The outcome of this investigation and the handling of its confidentiality will likely draw significant attention from both legal experts and the public at large.