Our privacy which is very important has drastically decreased with the development of the world wide web. A lot of information from our devices, even those which we don't want, are being sent to the servers of large companies, where they use it to make a better user experience, personalized ads and other things. Companies protect themselves with general terms and conditions of use which most of the users do not read. Often there is a loophole in the terms and information without users knowledge quickly becomes useful for something else. Measures ensuring the architecture's resilience to attack, data authentication, access control and client privacy need to be established. In the thesis we will be focusing on direct attacks and private information theft of smart television users. Smart televisions represent a great platform for stealing privacy. Here are presented some security issues of current smart televisions which can jeopardize our privacy. As proof that privacy of smart television user can be invaded with built-in camera, we built an app for Android TV operating sistem, which records user with help of the background process.