I could use clarification on this. Lets start with the assumption that I have my own machine/router/cable modem....and I want to talk with my girlfriend, who al

I could use clarification on this. Lets start with the assumption that I have my own machine/router/cable modem....and I want to talk with my girlfriend, who also uses one of my machines/routers/cable modems that I spec'd, procured, set up, and administrate for her. Would I be wrong to be concerned about the potential for contractors to review private video that was captured/re transmitted by the central servers, e.g. for machine learning training purposes or other "internal" service quality checks? And potentially capturing some of that video if they find it interesting and potentially sharing it anonymously on viral social media? It seems that would be a rare occurrence, but possible. Would end-to-end encryption be an appropriate way to eliminate that risk?