Using hardwired sensors, cameras, and control unit reduces attack vectors rather than wifi, obviously. But, if you're using a monitoring service (which most people will), you'll have to trust them with access. That being said, it's been over 10 years since I did any home security installation so I ...

https://www.hartz.com/wp-content/uploads/2023/02/best-guard-dog-2.jpg

This made me curious, I've been tinkering with Arduinos recently and it turns out there's an ESP32 CAM module for anyone looking to make their own WiFi camera network. Could always vibe code the shiz out of them? Bookmarked to see if there's any ready to use devices too though.

Wired PoE cameras, ideally on a separate network without access to the internet. In that case, you can even use Chinese cameras like Hikvision, without that I would stick to something like Ubiquiti where I expect your data will not be actively sent out, but who knows. Then definitely use local NVR, ...

Here one idea i been looking into from network chuck. I wanna try it out this year maybe https://youtu.be/tbCKWX34_G4?si=01n7MvvDAcS-i7-r