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Smart TVs use an operating system similar to Android phones. However, due to the ease of use and security of the users, manufacturers have made a trade-off that may have serious consequences, that is, they emphasize ease of use rather than security. Smart TVs have become vulnerable. The goal of the attack. 
Smart TV is not just a simple consumer product, it is also often used for enterprises or institutions to hold various online meetings. The survey results show that smart TV sales will increase by 20% annually from 2019 onwards. Although attacks against smart TVs have not yet spread widely, security experts say cybercriminals have noticed this breach is only a matter of time.
A smart TV is basically a computer equipped with a USB interface, an operating system, and a network function no less than a smart phone. But unlike computers and mobile devices, smart TVs usually do not require any authentication. Some models of smart TVs do not verify that the person who sends instructions over the network is the same person as the person who actually contacts the television. This means that a remote attacker is likely to control a smart TV and play any content he wants to play on a web conference.
Many mainstream manufacturers—Samsung, LG and Sony—have established application stores for smart TVs. But as with smart phone attacks, users are likely to be lured into third-party app stores and download malicious apps.
Someone used a special ransomware to infect his own Android smart TV experimentally. He modified the router's DNS settings through man-in-the-middle attacks. Then the smart TV blindly downloaded the malicious application.
Security experts pointed out that there are many other issues with the software update of smart TVs. For example, many models of TVs do not use encryption like SSL/TLS (Secure Socket Layer/Secure Transport Layer) when downloading updates. Not only is the problem of malware, it is also likely to cause smart TVs to download to malicious firmware. Some models of smart TVs are installed without even verifying the integrity of the firmware.
What's more serious is that smart TVs are increasingly integrated with business activities. People have become accustomed to entering payment information on their own televisions.
First, anti-virus software is not running on smart TVs, let alone whether anti-virus software can effectively prevent malicious attacks. Moreover, even if anti-virus software works, it will certainly degrade the performance of the TV. This is a big problem that affects TV sales.
At least for Android, its privilege model limits the behavior of applications without a user's explicit authorization, and reduces the malicious application's ability to destroy smart TVs. However, it is very likely that users will unconsciously go through those warnings to continue watching television programs.
The problems encountered with smart TVs are similar to those affecting IoT devices. Experts are very worried that these devices will be abused.
Some companies are currently developing new products that should address this issue. Their idea is to detect network anomalies rather than running anti-virus software. Perhaps detecting traffic alone does not completely guarantee the security of smart TVs, but at least this is a practical solution.
Smart TV is Hacked by TV Manufacturers to Pay Attention to System Security
Because security is far behind smart phones and desktop computers, smart TVs have opened up a new window for cybercriminals to launch intrusions.