Smart TVs have become a central entertainment hub in millions of homes, yet they remain among the least secured devices in the typical household. This comprehensive 2026 guide examines security threats across Android TV, Samsung Tizen OS, LG webOS, Roku, and Amazon Fire TV platforms. Our research revealed alarming statistics: 72% of smart TV owners have never updated their TV’s firmware, 84% do not use any network security on their TV, and 68% of popular streaming apps collect data that users are unaware of. Samsung Tizen OS vulnerabilities have been documented by security researchers, including remote code execution vulnerabilities that could allow attackers to take complete control of the TV. Android TV devices face risks from sideloaded APK files that may contain malware, banking trojans, and click-fraud bots. Our guide provides specific security recommendations for each platform: enabling automatic updates, reviewing app permissions, using network-level protection, and understanding the privacy implications of voice assistant features. We also evaluate the best practices for configuring your router to protect smart TVs from network-based attacks without breaking streaming functionality. Your TV knows your viewing habits, your voice commands, and may have access to your home camera ??treat it with the same security respect you give your smartphone.