The Justice department's
website gave a detailed version on what McAfee is charged with basically it is for pumping and dumping which is his first scheme and the the second one is the hyping up of ICOs that he mainly tweets because he has a large group of following in Twitter.
First, MCAFEE, WATSON, and other McAfee Team members bought large quantities of publicly traded cryptocurrency altcoins
Second, after these purchases, MCAFEE published false and misleading endorsement tweets via his Official McAfee Twitter Account recommending those altcoins to members of the investing public for investment in order to artificially inflate (or “pump” up) their market prices without disclosing that MCAFEE owned large quantities of the promoted altcoins, even though MCAFEE had given false assurances that he would disclose such information in various tweets and public statements during the scalping scheme.
Third, MCAFEE, WATSON, and other McAfee Team members then sold (or “dumped”) their respective investment positions in the promoted altcoins into the temporary but significant short-term market price increases that MCAFEE’s deceptive tweets typically generated, often for significant profits.
So what really got my attention is the authorities have considered pumping and dumping as
fraud now. Pumping and dumping in itself isn't the fraud but the lies and deception the person is doing is what considered the fraud here. McAfee for example has a hidden agenda while he bought those crypto early he then Tweets misleading information and sometimes pure lies just to influence the market which he really do as he knows he has a large following in Twitter.