; and (B) other mechanisms for inter-state information sharing about election cybersecurity. (2) Comment from election agencies In carrying out the assessment required under paragraph (1), the Secretary and the Chairman shall solicit and consider comments from all State election agencies. (3) Distribution The Secretary and the Chairman shall jointly issue the assessment required under paragraph (1) to— (A) all election agencies known to the Department and the Commission; and (B) the appropriate congressional committees. (o) Congressional notification (1) In general If an appropriate Federal entity has reason to believe that a significant election cybersecurity incident has occurred, the entity shall— (A) not later than 7 calendar days after the date on which there is a reasonable basis to conclude that the significant incident has occurred, provide notification of the incident to the appropriate congressional committees; and (B) update the initial notification under paragraph (1) within a reasonable period of time after additional information relating to the incident is discovered. (2) Reporting threshold The Secretary shall— (A) promulgate a uniform definition of a significant election cybersecurity incident ; and (B) shall submit the definition promulgated under subparagraph (A) to the appropriate congressional committees. 5. Advisory panel and guidelines (a) Advisory Panel (1) In general The Commission shall establish an advisory panel of independent experts on election cybersecurity. (2) Membership The Advisory Panel shall consist of not less than 9 members, of whom— (A) one shall be appointed by the Chairman, in consultation with the Secretary and the Director of the National Institute of Standards and Technology, and shall be designated as the Chairman of the advisory panel; (B) four shall be appointed by the Chairman, in consultation with the Secretary