For now, crypto's are not seen as securities and as such, they're not regulated by the SEC. This means that stuff like pump & dump is not illegal. However, many in the space expect crypto to be regulated as a security soon, which will also impact ICO's as they will need to provide much more information.

All I can advice to anyone reading this is do not participate in any known PnD (Pump 'n Dump). It might net you some profits occasionally, but there definitely will be situations where you're the bagholder left with losses.

Upvoted by the way, good post!