the next target could be Elon Musk and some public figures who actively tweeting about cryptocurrency (at least their bag) 
check on this youtube video and article. Twitter already became SEC's domain area since then. lol.
https://www.youtube.com/watch?v=cRNypdYQoWk
https://www.foxbusiness.com/markets/elon-musk-sec-probe-dogecoin-tweets-would-be-awesome