In what way? What privacy breach are you worried about?

For example are you worried that a real human at your home security company will be invading your privacy? When they do are you worried that real human will take personal action against you? Or are you worried about automated systems building knowledge about your life based on home security data? Or are you worried about your home security data used in aggregate? Maybe you are worried about attackers getting access?

Internal infosec and privacy controls/policies are required to protect you from some of these. Some of these threats may be more likely from Google, but I'd say some of them are more likely from other home security providers (keep in mind that a lot of home security products are actually intended to have another human monitoring your home).

I would say these are the obvious ones for Google:

> Or are you worried about automated systems building knowledge about your life based on home security data? Or are you worried about your home security data used in aggregate?

Good breakdown. For me the main issues would be around how technically capable Google is to ingest all of the content coming from ADT monitoring infrastructure, extract meaningful information and then merge that in with their existing knowledge of my life.

There’s a number of direct answers below, so I’ll give you a more philosophical one: privacy is in direct conflict with Google’s business model and thus it is impossible for them to deliver privacy in good form without jeopardizing their business.

I'd think it's both in the age of the smart thermostat that has a camera/mic built in.

... and motion sensor