As avast had stated, you should be using offline wallets.NEVER store your Bitcoin in an online wallet. Doing so is similar to giving your cash to a random guy on the street and saying "Hey, mind this for me for a while until I need it. Thanks."You should be keeping your Bitcoin encrypted on your own machine, and with at least 3 encrypted backups - one in the cloud, one on a USB stick / SD card, and one that you've emailed yourself. Again, all strongly encrypted. It wouldn't hurt also to have a brain-wallet and / or paper wallet.This is currency at the end of the day. Who do you trust holding your fiat currency for you? Treat Bitcoin the same way - realise that it is only as secure as YOU make it.- grahamgreene