The president issued an executive order establishing the Cyber Safety Review Board in May 2021 and ordered it to start work by reviewing the SolarWinds attack.
Where does it say that? I don't see it on https://www.whitehouse.gov/briefing-room/presidential-actions/2021/05/12/executive-order-on-improving-the-nations-cybersecurity/
Closest thing I found was
(b) The Board shall review and assess, with respect to significant cyber incidents (as defined under Presidential Policy Directive 41 of July 26, 2016 (United States Cyber Incident Coordination) (PPD 41)) affecting FCEB Information Systems or non-Federal systems, threat activity, vulnerabilities, mitigation activities, and agency responses.
(c) The Secretary of Homeland Security shall convene the Board following a significant cyber incident triggering the establishment of a Cyber Unified Coordination Group (UCG) as provided by section V(B)(2) of PPD-41; at any time as directed by the President acting through the APNSA; or at any time the Secretary of Homeland Security deems necessary.
Oops it was the next paragraph I guess:
(d) The Board’s initial review shall relate to the cyber activities that prompted the establishment of a UCG in December 2020, and the Board shall, within 90 days of the Board’s establishment, provide recommendations to the Secretary of Homeland Security for improving cybersecurity and incident response practices, as outlined in subsection (i) of this section.