I've been using KuCOin as my cryptocurrency exchange for a year already and I must say that I am really into it specially when it comes to their trading fees, secuirty and events.. Yes, there's no such thing as 100% unhackable exchange but we can do find exchanges like KuCoin which has a really good security.. This exchange have been doing a lot of things also in terms of their progress. They do have different programs and platforms which will give you profits too.