If you ask the Xfinity managers who came up with this idea whether thieves will be able to buy live information on whether your home is empty from hackers on the dark web, the managers will likely say... nothing. What they will do is look at you with a deer-in-the-headlights expression in their shocked faces.
Sigh.
The word "liability" might not always work, but occasionally it makes someone think a little harder about what their company is doing.