Crypto itself has so much new things to learn kind of makes us vulnerable in so many ways. I seriously considered moving out of this crypto world but that would be like quitting which i felt bad about so started fighting this.
I think more people will come only when we can ensure ICO's can be done in a better and safer manner or create more awareness.
I remember seeing scammers posting ETH address in Telegram and Slack to misled people to send funds. Another way is to spam plenty of messages in slack with discounted price to invest. This is the main reason why I am reluctant to use Slack nowadays.