In any cease-and-desist proceeding under subsection (a) of this section, the Commission may issue an order to prohibit, conditionally or unconditionally, and permanently or for such period of time as it shall determine, any person who has violated section
77q
(a)(1) of this title or the rules or regulations thereunder, from acting as an officer or director of any issuer that has a class of securities registered pursuant to section
78l of this title, or that is required to file reports pursuant to section
78o
(d) of this title, if the conduct of that person demonstrates unfitness to serve as an officer or director of any such issuer.