I keep all my crypto in cold storage wallets. I would never leave ANYTHING significant on an exchange. That is a great way to lose everything. Attily was doomed from the start. Anyone with experience could see it was a scam. They took developer and community fees for listing coins. I know personally. I don't even trust coinbase or bittrex. Traders know when dumps are coming by the movement of BTC to exchange addresses. So, everyone hopefully knows to leave no more than 25% of total crypto on an exchange