Which wallet do you use for storing your ERC-20 token?
I personally like MEW because it's very easy to use. Some people like Trezor or Ledger but personally I have no problems by using MEW

In MEW you have complete access to your private keys.
I think my preferred ERC-20 wallet is MyEtherwallet because of its high levels of security,if you can protect your private key without any compromise then you will not have any hack case future