The SEC spooked the burgeoning cryptocurrency marketplace in mid-2017 when it warned that many tokens were illegally sold securities.
source https://www.google.com/url?rct=j&sa=t&url=https://www.wsj.com/articles/private-jet-cryptocurrency-gets-pass-from-sec-11554325520&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNEKY7_n3_xo37pxXqYRLG_n7vdnLA
