Crypto-Trader.com Shut down. Did I loose all my Coins?
A similar type of event happened with Mt. Gox where users lost a total of 850 000 Bitcoins. Your Bitcoins are likely lost forever if the owner of the private keys does not agree to send them to you. However, you may be able to sue the exchange, but I am no legal advice. Take this as a lesson, to never keep a cryptocurrency on an exchange, it is very important to own your coins.