Re: NEver keep all your coins on an exchange

So Coinbase is risky to keep btc in then? I have my btc in their wallet.

It doesn't really matter what kind of exchange or wallet service you are using to store your coins in. In all cases you don't own what you actually have as the exchange or wallet service has full control over your coins. Coinbase is well insured against thefts and all that, but even while knowing that, I would never store my coins at any place beside offline where I have full control over every Satoshi that I own.

So what offline wallet do you recommend?

never be a good idea to store your bitcoin in third party like an online wallet and exchange , it's okay if you stored low amount only just to spend daily purpose. but if you talking a large amount storing your bitcoin on an exchange in the long term really a blunder it's has proven on how mtgox , cryptsy and bitfinex claimed hacked it should be a good example.