This is a serious issue that needs to be attended to. It happens to almost every ICO i have seen, except for some very few. It doesn't happen before the start or during Pre-ICO alone, it also happens during the ICO and after, where the scammers take advantage of ignorant investors.
The issue now is how the various ICO projects will make necessary awareness for people not to fall victim of this acts again.
this is 100% true. not only through telegram too... I found this article super helpful:
https://hackernoon.com/the-ico-handbook-705a89fa8978It's a must read for companies doing ICOs but also has some interesting example of phishing scams and how to avoid being duped. A lot of this is common sense though - if it looks too good to be true it probably is so everything needs to be taken with a grain of salt. ICOs are still w wild wild west