I store my bitcoins at Coinbase wallet. I think it can be stolen, this is a reason why I don't really trust online wallet, but I still use it @-@
to me i store my bitcoin in blockchain and yobit to me i think it s one of the most trusted and secure online wallet i do not prefer to any other wallet because i always consider blockcain and yobit the best online wallet.
I think yobit is an exchange dude? many people who recommend not overconfident or save a lot of your bitcoin in exchange site, of course you know what happened in bitfinex and mt GOX right ?
You should not save bitcoins on any exchange platform, its just not very safe and get let you lose a lot of money!