; and (2) with moderate or high confidence, that such intrusion or campaign can be attributed to a foreign state or to a foreign nonstate person, group, or other entity. (b) Briefing (1) In general Not later than 14 days after making a determination under subsection (a), the Director of National Intelligence, the Director of the Federal Bureau of Investigation, and the Secretary of Homeland Security shall jointly provide a briefing to the congressional leadership, the congressional intelligence committees and, consistent with the protection of sources and methods, the other appropriate congressional committees. The briefing shall be classified and address, at a minimum, the following: (A) A description of the significant foreign cyber intrusion or active measures campaign, as the case may be, covered by the determination. (B) An identification of the foreign state or foreign nonstate person, group, or other entity, to which such intrusion or campaign has been attributed. (C) The desirability and feasibility of the public release of information about the cyber intrusion or active measures campaign. (D) Any other information such Directors and the Secretary jointly determine appropriate. (2) Electronic election infrastructure briefings With respect to a significant foreign cyber intrusion covered by a determination under subsection (a), the Secretary of Homeland Security, in consultation with the Director of National Intelligence and the Director of the Federal Bureau of Investigation, shall offer to the owner or operator of any electronic election infrastructure directly affected by such intrusion, a briefing on such intrusion, including any steps that may be taken to mitigate such intrusion. Such briefing may be classified and made available only to individuals with appropriate security clearances. (3) Protection of sources and methods This subsection shall be carried out in a manner that is consistent with the protection of sources and methods. (c) Definitions In this section: (1) Active measures campaign The