We just installed Eero and it has the ability to report which devices are using how much data. I was surprised to see one of our family's laptops uploading a ton of data. Nearly twice as much as downloaded.
Odd thing is that the laptop does not seem to be running anything thing that should be uploading that much. Most of its cloud backup services are synched and when you look at the activity monitor I can't get a complete enough picture to see what is driving the usage.
Is there an application out there that people trust that can monitor and log what apps and/or processes are using data and when? It would be nice to get a picture over a couple of days to see what is going on.
I fear there is some sort of malware or another process that has been installed that is acting as a bit of a resource vampire that has hidden well enough from the usual activity monitor filters I have been using.
I have TripMode installed but it struggles with the history look, I also have explored LittleSnitch, but could not tell if it gave the full picture. Happy to go that path if you think it will sort me out.
I am running 2019 MacBook Pro 16" Big Sur 11.1