Yes bro it is possible. There a many hacker they can steal your wallet money easily. So better not to store big amount in any wallet . If you have big amount then do trade or investment and transfer the profit reward into your account.
In this litigation it was your mistake as you gave him log on to your your own bitcoin wallet wich is a bit you must by no means do. No somber character or website will always inquire you for your classified solution or other in rank interconnected to your wallet for the reason that they don't need it.
Such a currency would go against the decentralization of cryptocurrencies, but it would have a stability like no other, it is nice to see this news, since such a currency could become an alternative to the USDT