Look for "on-device AI processing." Apple’s HomeKit Secure Video allows cameras to analyze motion on a home hub (Apple TV/HomePod) rather than sending video to Apple's servers. Google's Nest Aware has similar options, but you must toggle them off. Read the fine print: Does the camera send "thumbnails" to the cloud? If yes, your privacy is already compromised.
Even with the best intentions, your security system can become a privacy liability if not properly managed. Are there privacy risks of having home cameras? Look for "on-device AI processing