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Is Cox internet usage accurate? I read that 20 GB of data is 240 hrs of video streaming. How is it possible that I have used 20 GB of data in one day when i wasn't even home?
Do you have security cameras like Ring or Nest doorbells? If quality is set to high and 24/7 recording (or on motion and a tree or something is constantly setting it off) that could use a lot of data.