A few weeks ago I got an email telling me that my password had been changed by someone on my poloniex account. So, I suppose therefore my account was hacked. Immediately I went to freeze the account and changed my password. But the thing is, I don't want to risk that happen again with a large amount stored in the exchange.

Where would be the best place to keep my BTC while I'm not trading with it in an exchange? I don't feel as if storing it on my own hard drive is very secure as hard drives can fail, and what can you do if that happens..?