Again I really can't give you an answer. For crypto investments any investment where you do not have full control of your private keys is risky. So unless your Bitcoins are in a Trezor you are not safe.
My approach (for Crypto) has been to put relatively small amounts of my holdings in casino bankrolls, Poloniex for lending and now Steemit. So I diversify as much as I can and limit my exposure.
I literally show everyone where my Bitcoins are here if that helps --> https://www.bitcoin-millionaire.com/my-btc-wallet/