I think that for now, there are several threads in this forum that inform us about the scams, it may include the projects that are considered as scams with several reasons and problems or proves. However, it may be only done after there are some investors entered on the projects. Of course, every investor has known this risk and it is very difficult to be ignored.
Obviously there are Scam Accusation and Investigation sub-forums here, but the chances of scam victims getting any sort of compensation is very remote. The crypto-anonymous and liquid nature of cryptocurrencies makes it extremely difficult for the authorities to detain the scammers and seize their holdings. And things get further complicated when the coins move from one country to another, and if both the nations have differing legal clauses regarding cryptocurrency. In the end, it is up to us to take the necessary precautions to prevent getting scammed.