Prioritize devices with strong security features and updates—brands like Arlo and Eufy have a reputation in this area. You should secure your Wi-Fi network with a unique, regularly updated password (every 3 months or so) and use VPN encryption to scramble your activity. You should also hop into your router's web management portal to disable remote management. This page should be in your bookmarks as you can use it to check on device network connections and activity. Last but not least, you need to frequently check if your device firmware is up to date to patch vulnerabilities.