We've seen it in computers...hackers lock up a user's data and hold it hostage for some fine in, usually, bitcoin. But who would have thought their tv could get infected?!
From the article below: On Christmas day, a family member of software developer Darren Cauthon received an unwelcome gift. According to Cauthon, that person “downloaded an app to watch a movie” on his or her LG smart TV, and the device froze soon after. When it rebooted, it was stuck on a screen purporting to show a letter from the desk of FBI Director James Comey, one claiming in subgrammatical English that the device had been locked up for “your attendance of the forbidden pornographic sites.” To make good, the letter warned, the device’s owner would have to pay a $500 fine.