Are you the only one? Because if yes, the problem comes from your side for sure. Otherwise, we would see a lot of people posting about this already. And a lot of articles published on the news.
And in my opinion, you can't say a site is a scam if it has a security issue (if it's really the case). People like to wrongly overuse the word "scam"
I don't invest in ICOs or anything related to such. I despise the investment in such. I only trade in exchanges, though it has reduced quite a lot recently. So sorry, can't help you out here.
It's obvious that the problem source comes from OPs side. It's probably his system or device that got compromised by a hacker, which is now messing everything up in the hope to steal funds.
An exchange itself doesn't need to mess with people's accounts to steal funds. They can just choose to withdraw an amount from their hot wallet and claim that they have been a victim of hackers.
People (for good reason) have become a bit paranoid when it comes to shady actions of exchanges, but they have to look at themselves as well, and that's something they don't seem to understand yet.