Hackers are not the ones to be concerned about, they don't give a rip about residential targets for the most part. It's the makers of all those connected devices, with implanted access to your information. When they expose customer information either accidentally or often, intentionally for profit, you're just a row in a database for sale.
A larger risk is your phone. There are myriad methods of capturing and transmitting personal information to the servers connected with apps. Good luck stopping it, too.