You must be careful when choosing an ICO to invest to. I myself is a victim of ICO scam but I just lost a small amount to it. The information they give is not enough to judge that the ICO you are participating with is legit. You must dig more information on the ICO to ensure that it is a legit ICO.
It's probably not even rare here if people got caught up in multiple scams (ico or not). Crypto is full of snake pits.