Coins should always be considered in a safe storage, there are lot of wallets and platform that could be used to hold coins, both of this has good side and bad. Where will you choose to store or hold your coins, in a close source wallet (exchanges) or an open source wallet like electrum and Hodler wallet?
The choice is easy get a hardware wallet, most hardware wallets now support many coins so it is likely your favourite projects are there or will be added shortly, but do not make the mistake of holding your coins in an exchange, there has been recently a hack to remind us that regardless of the security exchanges implement it will be impossible to secure them completely.