Of course. This is just as the same as stealing because hacking the BTC wallet means that they will transfer your Bitcoins to their accounts. However, this can not really be addressed well as a legal case because hackers are really hard to identify and you have no strong evidence to convict someone with it. Hackers in today's time are now really active especially to hacking Bitcoin and cryptocurrency wallets because it was advertised that Bitcoin is now really high in terms of value. The best way to avoid being hacked is just to not trust anyone our accounts and always change the password with a strong one every now and then.