Tigre, I've used coinbase for years and never had an issue. It's pretty secure, you have to receive a texted code to your personal phone to enter before doing any transactions. Only issue is the fees are really crappy, so you don't want to do a lot of moving money around. CoinbasePro is free, and a little better with fees. But it can look a little intimidating at first because its a lot more detailed than the normal CB site.