I do not think so, because there is no secure system, even bitcoins can be hacked, through an unsecured exchange.
Only on exchanges though, and it is your own fault to phished too if ever that happens, we should be vigilant in terms of our assets, this is money we are talking and we can't talk and act lightly about it. And last thing is as of now it is not hack-able if it is on your wallet (cold wallet), I have never heard such things as of now.