Lets take a closer look here:
Hughes as an ISP make an amount of data available and supports the delivery of that data to the Modems LAN port.
It is, with just a couple of exceptions, the users connected devices that consume the supplied data.
> A failing transmitter can inflate data usage due to a high transmission failure rate <
How to proceed: As the forum Moderator to run remotes diagnostics and to check your Modems error logs
> A failing modem that gets locked into an update/fall back loop can use data on its own <
How to proceed: Perform a Modem Isolation Test as follows
What you are doing here is:
#1: Take a screenshot of the Download Status Meter and note the exact time.
#2: At that time disconnect the Ethernet cable from the rear of the modem. Leave the Modem powered up.
#3: Wait a period of time. Overnight for example
#4: Connect the Ethernet cable to the Modem and note the exact time and immediately take another screenshot of the usage meter.
If there was meaningful data usage post the Disconnect and Reconnect screenshots as well as the associated times here in this topic so that the Mods can address your issue.
Remember to leave the Modem powered up as this will preserve the Modem logs that support your case.
In the event that there was no usage during the period of disconnect we have to conclude that the data is being used by something as yet unknown in your network.
There are those of us in the Community that can assist you in finding the culprit but first lets have the diagnostics performed as well as doing the Modem Isolation test.
Just cancelled today June 1st 2017 New month starts 6/2/2017. paying the $370 disconnect fee. The plan I was on 15G says you can run a network on this. stream videos etc. Nope. Just turned HN back on for the month 5/31/17 no usage for the entire month as I have not used it. Got up this AM, used 3.79G last night and after calling to disconnect another 1.2g used. To the person who suggested , they have 3 usage meters and you should check them daily! I did, one day and a third of my usage was gone. Phones upgraded yes. so I have a plan that will run a network, steam videos, but if you need to upgrade any device its going to suck your data....my point is you cant run a home network with Hughesnet. And I still have the system thru the end of today Im assuming as I still have service till mid nite