It really is hard to believe that there are some ICOs who are intended to scam people. There are all hypocrits and rely on the weakness of people especially those who are new to bitcoin. So sad.
If you're an investors then I suggest that really have to investigate their whitepaper, websites, the team, the bounty campaign, the product that they wanna make and their community. Hardly check every details of it so that you wont lose but also you need to note this. Invest what you can afford to lose.
Even investigating the project platform of a bounty programs but still we can't sure if they are a legit ICOs project because sometimes reading their project programs can encourage people to invest.